JP2007214730A - Information processing system, information processing apparatus, and information processing method, program, and recording medium - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To actualize remote wakeup by detecting a sleep mode release data sequence, using a network card made compatible with parallel transfer. <P>SOLUTION: The sleep mode release data sequence is configured, such that prefix data in 4 bytes whose values are all FFh are repeated by a prescribed number of times n (e.g. four times), principal data, comprising a0 being the least significant byte of a MAC address composed of 4 bytes; a1 corresponding to a second byte of the MAC address composed of 4 bytes; a2 composed of 4 bytes; a3 composed of 4 bytes; a4 composed of 4 bytes; and the most significant byte a5 composed of 4 bytes, in succession are repeated by a prescribed number of times m (e.g. eight times), and postfix data in 4 bytes whose values are all FFh are repeated by a prescribed number of times p (e.g. three times). The sleep mode release data sequence is inserted to an optional part and received by four lanes, and the same lane sleep mode release data sequence is received by any lane. The technology relating to the present invention can be applied to network nodes for personal computers or the like. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an information processing system, an information processing apparatus, an information processing method, a program, and a recording medium, and in particular, an information processing system, an information processing apparatus, and the like that are suitable for remote control of a network node, The present invention also relates to an information processing method, a program, and a recording medium.

  Conventionally, there are techniques for providing a remote administrator with the ability to remotely activate or deactivate a LAN station using network commands. For example, even if the data processing network controller is operating in the sleep mode to save power, a part of the controller is left in the transmission monitoring operation state, and the sleep mode (sleep state, sleep mode state, or power (Sometimes referred to as a save state), the presence is signaled to the network. A part of the controller in the transmission monitoring state has a technology capable of detecting a network command for instructing activation transmitted from another device via the network and activating its own state. (For example, patent document 1).

Japanese Patent Laid-Open No. 06-037765

  In this way, a technology that can start a dormant network node (for example, a personal computer connected to a LAN (Local Area Network)) from a LAN by transmitting a special packet is called Wake On LAN. It is called. In other words, Wake On LAN is a technology that can remotely activate a sleep state network node connected to the network by sending a specific frame (special packet) called Magic Packet (trademark). It is. When the network node in the sleep state corresponding to Wake On LAN receives this specific frame, the sleep state is canceled in the received network node and the system is activated.

  For example, if a personal computer as a network node connected to the network has a LAN controller (or the personal computer is equipped with a LAN controller), all Wake On LAN functions are integrated inside the LAN controller. Therefore, when putting a personal computer in the network in a sleep state, the system other than the LAN controller of this personal computer is powered down, and the LAN controller is only waiting for the personal computer to detect Magic Packets. It becomes possible to reduce the power consumption.

  As shown in FIG. 1, this Magic Packet includes a preamble, a destination address, a source address, etc. according to an IEEE 802.3 standard MAC frame (Ethernet (registered trademark) frame), and an arbitrary position in the data field. In addition, as fixed data, a synchronization code represented by 6 bytes of FFh, and MAC (IEEE) addresses of 16 consecutive nodes following the code are described.

  On the other hand, in recent years, 10 Gbit Ethernet (registered trademark) enabling 10 Gbps transfer has been standardized by IEEE. In this standard, a medium-independent interface called XGMII (10 Gigabit Media Independent Interface) is standardized as a common interface between a MAC (Media Access Control) layer and a physical layer (PHY). In this interface, 32-bit data transfer signal lines are prepared for transmission and reception, and in data reception, as shown in FIG. 2, a group of 1 byte (8 bits) is called a lane, The received MAC frame is output to “lane 0”, “lane 1”, “lane 2”, and “lane 3” sequentially from the first byte. In MAC LSI, data is received for each lane from the XGMII interface, and the data is processed.

  10Gbit Ethernet (registered trademark), the conventional Wake On LAN is applied, and the XGMII compatible LAN controller of the dormant personal computer connected to the 10Gbit Ethernet (registered trademark) uses the Magic described with reference to FIG. When Packet is received, the following problems occur.

  As described with reference to FIG. 2, in the XGMII-compatible LAN controller, the interface between the MAC layer and the physical layer is parallel communication, and the received MAC frames are “lane 0”, “lane Supply to “1”, “lane 2”, and “lane 3”. As described with reference to FIG. 1, the Magic Packet is placed at an arbitrary position in the payload of the received packet, the synchronization code represented by 6 bytes of FFh, and the MAC ( It has fixed data of IEEE address. Therefore, the data string supplied to the four lanes of the XGMII-compatible LAN controller differs depending on which position in the payload of the received packet the fixed data is inserted.

  For example, as shown in FIG. 3, in the received data 1, the head of the synchronization code represented by 6 bytes of FFh is supplied to the lane 2, and as shown in FIG. The head of the synchronization code represented by FFh is supplied to lane 0. Accordingly, it is impossible to receive the same fixed pattern data in each lane when the received data 1 is received and when the received data 2 is received. FIG. 5 shows a data string supplied to lane 0 when reception data 1 is received and a data string supplied to lane 0 when reception data 2 is received. Since these two data strings are not recognized to be the same data string, the MAC LSI that receives and processes the data for each lane has the Magic Packet inserted at an arbitrary position in the payload of the received packet. It cannot be recognized correctly.

  For this reason, in order to correctly recognize the Magic Packet inserted at an arbitrary position in the payload of the received packet in a LAN controller that supports XGMII, complicated logic such as recognizing the pattern by combining the data of each lane is required. I need it. This increases the scale of the receiving circuit to configure the logic, increases the cost, and also increases the power consumption, which hinders the power saving that is the original purpose of Magic Packet. End up. In addition, since complex logic is configured for Magic Packet recognition, it takes a long time for recognition, so it is expected that the response speed will decrease, and this will hinder the response to high-speed communications such as 10Gbit Ethernet (registered trademark). End up.

  The present invention has been made in view of such a situation, and makes it possible to exchange a dormancy release data string that can be easily and correctly recognized by an XGMII-compatible LAN controller.

  An information processing system according to a first aspect of the present invention includes a first information processing apparatus that transmits a sleep release data sequence, and a second information release that releases the sleep state when the sleep release data sequence is received in the sleep state. An information processing system configured with an information processing device, wherein the first information processing device is generated by a sleep release data sequence generation unit that generates the sleep release data sequence and the sleep release data sequence generation unit A transmission unit that transmits the sleep release data sequence to the second information processing apparatus via a predetermined network, and the sleep release data sequence generated by the sleep release data sequence generation unit includes n Is a predetermined integer greater than or equal to 2 and includes a plurality of data configured by repeating predetermined bytes of data n times, and the second information processing apparatus includes: Receiving means for receiving the dormancy release data string transmitted from the first information processing apparatus via the network, and a first unit for transferring data between the physical layer and the data link layer of the protocol stack by parallel communication. Interface means; and detecting means for detecting the dormancy release data string received by the receiving means and supplied via the first interface means, wherein the first interface means comprises the data link layer The data string supplied to the physical layer is distributed to n lanes each having a predetermined integer of 2 or more for each predetermined byte, and the detection means includes lane detection means for n lanes, and the lane detection means Is supplied with the data string of one lane among the n lanes distributed by the first interface means. In the lane detection means for n lanes, it is detected whether or not the sequence matches a data sequence having a data length of 1 / n of the dormancy release data sequence composed of non-repeated data of the predetermined bytes. When the data string that has been matched with the data string having a data length of 1 / n of the sleep canceling data string, it is determined that the sleep canceling data string has been detected.

  The first information processing apparatus may further include second interface means for exchanging data between the physical layer and the data link layer of a protocol stack by parallel communication. The interface means can convert a data string of n lanes supplied from the data link layer to the physical layer into a data format suitable for the physical layer, and the transmitting means can convert the interface to the interface. It is possible to receive the dormancy release data string generated by the dormancy release data string generation means via the means and transmit it to the second information processing apparatus via a predetermined network.

  The second information processing apparatus may further include a sleep state release unit that releases the sleep state when the detection unit detects the sleep release data string.

  The dormancy release data sequence includes a prefix data obtained by repeating data of a first predetermined byte n × a times, and d types of data when a, b, c, and d are each a predetermined integer of 1 or more. The main data constituted by repeating the data of the second predetermined byte n times each further b times, and the postfix data in which the data of the third predetermined byte is repeated n × c times It can be comprised.

  The predetermined network may be 10 Gbit Ethernet (registered trademark).

  The first interface means can exchange data based on the XGMII (10 Gigabit Media Independent Interface) standard.

  In the information processing system according to the first aspect of the present invention, the first information processing apparatus that transmits the dormancy release data string generates the dormancy release data string, and the generated dormancy release data string passes a predetermined network. And the dormancy release data sequence includes a plurality of data configured by repeating data of a predetermined byte n times when n is a predetermined integer of 2 or more. The sleep release data transmitted from the first information processing apparatus via a predetermined network in the second information processing apparatus configured to release the sleep state when the sleep release data string is received in the sleep state. A sequence is received, data is exchanged between the physical layer and the data link layer of the protocol stack by parallel communication, and every predetermined byte, n lanes, which are two or more predetermined integers. It provided that, dormancy release data string exchanged parallel communication is detected.

  An information processing apparatus according to a second aspect of the present invention includes: a receiving unit that receives a dormancy release data string transmitted from another information processing apparatus via the predetermined network; a physical layer and a data link layer of a protocol stack Interface means for exchanging data in parallel communication, and detection means for detecting the dormancy release data string received by the receiving means and supplied via the interface means, and received by the receiving means The dormancy release data sequence includes data configured by repeating data of a predetermined byte n times when n is a predetermined integer equal to or greater than 2, and the interface means includes the data link layer The data string supplied to the physical layer is distributed to n lanes that are predetermined integers of 2 or more for each predetermined byte, and The detection means includes lane detection means for n lanes, and the lane detection means is supplied with a data string of one lane among n lanes distributed by the interface means, and the supplied data string is The lane detecting means for n lanes detects whether or not the data string has a data length of 1 / n of the dormancy cancellation data string composed of non-repeated data of a predetermined byte, and the supplied data string However, if it matches the data string having a data length of 1 / n of the dormancy cancellation data string, it is determined that the dormancy cancellation data string has been detected.

  When the detection means detects the sleep release data string, it can further include a sleep state release means for releasing the sleep state.

  The dormancy release data sequence includes a prefix data obtained by repeating data of a first predetermined byte n × a times, and d types of data when a, b, c, and d are each a predetermined integer of 1 or more. The main data constituted by repeating the data of the second predetermined byte n times each further b times, and the postfix data in which the data of the third predetermined byte is repeated n × c times It can be comprised.

  The predetermined network may be 10 Gbit Ethernet (registered trademark).

  The interface means can be made to exchange data based on XGMII (10 Gigabit Media Independent Interface) standards.

The information processing method according to the second aspect of the present invention includes a reception step of receiving a data string transmitted from another information processing apparatus via the predetermined network, and the data received by the processing of the reception step. A transfer step of transferring a sequence via an interface that exchanges data between a physical layer and a data link layer of the protocol stack by parallel communication, and the data sequence transferred by the process of the transfer step is the dormancy release data sequence A detecting step for detecting whether or not the data sequence is detected, and a detecting step for canceling the sleep state when the data sequence is detected to be the sleep canceling data sequence by the processing of the detecting step, and the receiving step The dormancy release data sequence received by the process of (2) is a predetermined byte when n is a predetermined integer equal to or greater than 2. A plurality of data configured by repeating data n times, and in the process of the transfer step, a data string supplied from the data link layer to the physical layer is set to two or more predetermined bytes for each predetermined byte. Distributed to n lanes that are integers of
In the process of the detection step, the data string of one lane among the n lanes distributed by the process of the transfer step is 1 / n of the dormancy release data string composed of non-repeated data of the predetermined bytes. It is detected whether or not the data string matches the data string of the data length, and when the supplied data string matches the data string having a data length of 1 / n of the dormancy cancellation data string, the dormancy cancellation data string is detected. Judge that

  The program according to the second aspect of the present invention controls reception by a reception control step for controlling reception of a data string transmitted from another information processing apparatus via the predetermined network, and processing of the reception control step. A transfer control step for controlling a process of transferring the data sequence transmitted between the physical layer and the data link layer of the protocol stack via an interface that exchanges data by parallel communication, and a transfer is performed by the process of the transfer control step. A detection step for detecting whether the controlled data string is the sleep release data string, and a state of sleep when the data string is detected to be the sleep release data string by the process of the detection step. A sleep release data sequence whose reception is controlled by the processing of the reception control step. , N is a predetermined integer equal to or greater than 2, and includes a plurality of data configured by repeating predetermined bytes of data n times. In the processing of the transfer control step, The transfer is controlled so that the data string supplied to the layer is distributed to n lanes that are two or more predetermined integers for each predetermined byte. In the processing of the detection step, the data sequence is distributed by the processing of the transfer control step. Detecting whether or not a data string of one lane among the n lanes matches a data string having a data length of 1 / n of the dormancy release data string composed of non-repeated data of the predetermined bytes, When the supplied data string matches a data string having a data length of 1 / n of the dormancy cancellation data string, a process for determining that the dormancy cancellation data string has been detected is calculated. To be executed in.

  In the second aspect of the present invention, a data string transmitted from another information processing apparatus is received via a predetermined network, and the received data string is between the physical layer and the data link layer of the protocol stack. The data is transferred via an interface that exchanges data by parallel communication, and it is detected whether or not the transferred data string is a sleep release data string. At this time, the dormancy release data string includes a plurality of data configured by repeating data of a predetermined byte n times when n is a predetermined integer of 2 or more.

  An information processing apparatus according to a third aspect of the present invention includes a sleep release data sequence generation unit that generates a sleep release data sequence, and the sleep release data sequence generated by the sleep release data sequence generation unit on a predetermined network. And the transmission unit for transmitting to another information processing apparatus, and the sleep release data sequence generated by the sleep release data sequence generation unit includes a predetermined byte when n is a predetermined integer of 2 or more. This data is configured to include a plurality of data configured by repeating n times.

  Interface means for exchanging data between the physical layer and the data link layer of the protocol stack by parallel communication can be further provided, and the interface means is supplied to the physical layer from the data link layer. The data sequence of the lane can be converted into a data format suitable for the physical layer, and the transmission unit can transmit the sleep release data sequence generated by the sleep release data sequence generation unit via the interface unit. Upon receipt of the supply, the dormancy release data string can be transmitted to the other information processing apparatus via a predetermined network.

  The interface means can exchange data based on the XGMII (10 Gigabit Media Independent Interface) standard.

  The dormancy release data sequence includes a prefix data obtained by repeating data of a first predetermined byte n × a times, and d types of data when a, b, c, and d are each a predetermined integer of 1 or more. The main data constituted by repeating the data of the second predetermined byte n times each further b times, and the postfix data in which the data of the third predetermined byte is repeated n × c times It can be comprised.

  The predetermined network may be 10 Gbit Ethernet (registered trademark).

  The information processing method according to the third aspect of the present invention provides a sleep release data sequence generation step for generating the sleep release data sequence, and the sleep release data sequence generated by the processing of the sleep release data sequence generation step is performed in a predetermined manner. The sleep dormant data string generated by the process of the dormancy canceling data string generating step is a predetermined integer greater than or equal to 2 In some cases, the data is configured to include a plurality of data configured by repeating predetermined bytes of data n times.

  According to a third aspect of the present invention, there is provided a program for generating a sleep release data sequence that generates the sleep release data sequence, and the sleep release data sequence generated by the processing of the sleep release data sequence generating step, in a predetermined network. And a transmission control step for controlling processing to be transmitted to another information processing apparatus, and the dormancy release data sequence generated by the processing of the dormancy release data sequence generation step includes a predetermined n of 2 or more. In the case of an integer, the computer is caused to execute a process including a plurality of data configured by repeating predetermined bytes of data n times.

  In the third aspect of the present invention, when n is a predetermined integer equal to or greater than 2, a dormancy release data sequence including a plurality of data configured by repeating data of a predetermined byte n times is generated. Then, the generated sleep release data string is transmitted to another information processing apparatus via a predetermined network.

  The network is a mechanism in which at least two devices are connected and information can be transmitted from one device to another device. The devices that communicate via the network may be independent devices, or may be internal blocks that constitute one device.

  The communication is not only wireless communication and wired communication, but also communication in which wireless communication and wired communication are mixed, that is, wireless communication is performed in a certain section and wired communication is performed in another section. May be. Further, communication from one device to another device may be performed by wired communication, and communication from another device to one device may be performed by wireless communication.

  According to the present invention, it is possible to exchange a dormancy release data string. In particular, when realizing remote wake-up in a high-speed network, a dormancy release data string that can be easily and correctly recognized by an XGMII-compatible LAN controller. Can give and receive.

  Embodiments of the present invention will be described below. Correspondences between constituent elements of the present invention and the embodiments described in the specification or the drawings are exemplified as follows. This description is intended to confirm that the embodiments supporting the present invention are described in the specification or the drawings. Therefore, even if there is an embodiment which is described in the specification or the drawings but is not described here as an embodiment corresponding to the constituent elements of the present invention, that is not the case. It does not mean that the form does not correspond to the constituent requirements. Conversely, even if an embodiment is described here as corresponding to a configuration requirement, that means that the embodiment does not correspond to a configuration requirement other than the configuration requirement. It's not something to do.

  An information processing system according to a first aspect of the present invention includes a first information processing apparatus (for example, a personal computer 11 including a network card 39-1 or 39-3) that transmits a sleep release data string, and the information processing system in a sleep state. An information processing system configured with a second information processing device (for example, a personal computer 11 including a network card 39-2 or 39-3) that releases a sleep state when receiving a dormancy release data sequence; The first information processing apparatus includes a sleep release data string generation unit (for example, a sleep release data string generation unit 64) that generates the sleep release data string, and the sleep release generated by the sleep release data string generation unit. A transmission means (for example, PHY 63) for transmitting the data string to the second information processing apparatus via a predetermined network; The sleep release data sequence generated by the sleep release data sequence generation means includes data configured by repeating predetermined bytes of data n times when n is a predetermined integer of 2 or more (for example, A plurality of prefix data, data constituting main data, and postfix data), and the second information processing device is connected to the first information processing device via the predetermined network. Receiving means (for example, PHY 63) for receiving the dormancy release data string transmitted from the first interface means (for example, XGMII 62) for exchanging data between the physical layer and the data link layer of the protocol stack by parallel communication Detecting means for detecting the dormancy release data string received by the receiving means and supplied via the first interface means; The first interface means distributes a data string supplied from the data link layer to the physical layer to n lanes that are two or more predetermined integers for each predetermined byte, and the detection means Lane detection means (for example, lane detection circuit 91) for n lanes, and the lane detection means receives a data string of one lane among n lanes distributed by the first interface means, Whether the supplied data string matches a data string having a data length of 1 / n of the dormancy cancellation data string composed of non-repeated data of the predetermined bytes (for example, a lane dormancy cancellation data string). In the lane detection means for n lanes, when the supplied data string matches a data string having a data length of 1 / n of the dormancy release data string, the sleep Dividing the data string is determined to have been detected.

  The first information processing apparatus may further include second interface means (for example, XGMII62) that exchanges data between the physical layer and the data link layer of a protocol stack by parallel communication. The interface means can convert a data string of n lanes supplied from the data link layer to the physical layer into a data format suitable for the physical layer, and the transmitting means can be connected via the interface means, The dormancy canceling data string generated by the dormancy canceling data string generating unit can be supplied and transmitted to the second information processing apparatus via a predetermined network.

  The second information processing apparatus may further include a sleep state canceling unit (for example, PS Manager 71 or CPU 31) that cancels the sleep state when the detection unit detects the sleep cancel data string.

  The dormancy cancellation data string is a prefix in which data of a first predetermined byte (for example, FFh) is repeated n × a times when each of a, b, c, and d is a predetermined integer of 1 or more. Data, d types of second predetermined byte data (for example, six types of 1-byte data a0 to a5 constituting the MAC address) are repeated n times, and are further repeated b times. Main data and postfix data in which data of a third predetermined byte (for example, FFh) is repeated n × c times.

  The predetermined network may be 10 Gbit Ethernet (registered trademark).

  The first interface means can exchange data based on XGMII (10 Gigabit Media Independent Interface) standard.

  The information processing apparatus according to the second aspect of the present invention includes a receiving unit (for example, PHY 63) that receives a dormancy release data string transmitted from another information processing apparatus via the predetermined network, and a physical protocol stack. Interface means (for example, XGMII62) for exchanging data between the data link layer and the data link layer, and detection means for detecting the dormancy release data string received by the receiving means and supplied via the interface means The dormancy cancellation data sequence received by the receiving means includes data (for example, a prefix) in which data of a predetermined byte is repeated n times when n is a predetermined integer of 2 or more. Data, data constituting main data, and postfix data), and the interface means A data string supplied from the data link layer to the physical layer is distributed to n lanes each having a predetermined integer of 2 or more for each predetermined byte, and the detection unit is a lane detection unit (for example, lane detection) for n lanes. Circuit 91), wherein the lane detection means is supplied with a data string of one lane among the n lanes distributed by the interface means, and the supplied data string is based on non-repeated data of the predetermined bytes. It is detected whether or not it matches a data string (for example, a lane dormancy cancellation data string) having a data length of 1 / n of the configured dormancy cancellation data string, and the lane detection means for n lanes supplies the supplied data If the sequence matches a data sequence having a data length of 1 / n of the dormancy release data sequence, it is determined that the dormancy release data sequence has been detected.

  When the detection means detects the sleep release data string, it can further include a sleep state release means (for example, PS Manager 71 or CPU 31) for releasing the sleep state.

  The dormancy cancellation data string is a prefix in which data of a first predetermined byte (for example, FFh) is repeated n × a times when each of a, b, c, and d is a predetermined integer of 1 or more. Data, d types of second predetermined byte data (for example, six types of 1-byte data a0 to a5 constituting the MAC address) are repeated n times, and are further repeated b times. Main data and postfix data in which data of a third predetermined byte (for example, FFh) is repeated n × c times.

  The predetermined network may be 10 Gbit Ethernet (registered trademark).

  The interface means can exchange data based on XGMII (10 Gigabit Media Independent Interface) standard.

  The information processing method and program according to the second aspect of the present invention provide an information processing device (for example, a personal computer including a network card 39-2 or 39-3) that releases a sleep state when a sleep release data string is received in the sleep state. A computer 11) information processing method for receiving (controlling) a data string transmitted from another information processing apparatus via the predetermined network (for example, step S12 in FIG. 14). And the data string received (controlled) by the processing of the reception (control) step is transferred via an interface that exchanges data between the physical layer and the data link layer of the protocol stack by parallel communication. A transfer (control) step (for example, the process of step S13 in FIG. 14), and the transfer A detection step (for example, the process of step S14 in FIG. 14) for detecting whether or not the data string transferred (controlled) by the process of (control) step is the dormancy release data string, and the process of the detection step When the data sequence is detected to be the dormancy cancellation data sequence, a cancellation step (for example, the processing of step S17 and step S18 in FIG. 14) for canceling the sleep state is included. The dormancy release data sequence received is data configured by repeating data of a predetermined byte n times when n is a predetermined integer of 2 or more (for example, data constituting prefix data and main data) , And postfix data), and in the process of the transfer (control) step, the data link layer The data string supplied to the physical layer is distributed to n lanes that are predetermined integers of 2 or more for each predetermined byte, and in the process of the detection step, of the n lanes distributed by the process of the transfer step It is determined whether or not a data string of one lane matches a data string having a data length of 1 / n of the dormancy cancellation data string composed of non-repeated data of the predetermined bytes (for example, lane dormancy cancellation data string). If the detected and supplied data string matches a data string having a data length of 1 / n of the dormancy cancellation data string, it is determined that the dormancy cancellation data string has been detected.

  The information processing apparatus according to the third aspect of the present invention is generated by a sleep cancellation data string generation unit (for example, a sleep cancellation data string generation unit 64) that generates a sleep cancellation data string and the sleep cancellation data string generation unit. Transmission means (for example, PHY 63) for transmitting the sleep release data string to another information processing apparatus via a predetermined network, and the sleep release data string generated by the sleep release data string generation means is , N is a predetermined integer greater than or equal to 2, data configured by repeating data of a predetermined byte n times (for example, each of pre-data, data constituting main data, and post-data) It is comprised including a plurality.

  Interface means (for example, XGMII62) for exchanging data between the physical layer and the data link layer of the protocol stack by parallel communication can be further provided, and the interface means is supplied from the data link layer to the physical layer. The data sequence of n lanes can be converted into a data format suitable for the physical layer, and the transmission unit can transmit the sleep release data generated by the sleep release data sequence generation unit via the interface unit. In response to the supply of the sequence, the sleep release data sequence can be transmitted to the other information processing apparatus via a predetermined network.

  The interface means can exchange data based on XGMII (10 Gigabit Media Independent Interface) standard.

  The dormancy cancellation data string is a prefix in which data of a first predetermined byte (for example, FFh) is repeated n × a times when each of a, b, c, and d is a predetermined integer of 1 or more. Data, d types of second predetermined byte data (for example, six types of 1-byte data a0 to a5 constituting the MAC address) are repeated n times, and are further repeated b times. Main data and postfix data in which data of a third predetermined byte (for example, FFh) is repeated n × c times.

  The predetermined network may be 10 Gbit Ethernet (registered trademark).

  An information processing method and program according to a third aspect of the present invention is an information processing method for an information processing apparatus (for example, a personal computer 11 including a network card 39-1 or 39-3) that transmits a sleep release data string. The sleep release data string generating step (for example, the process of step S10 in FIG. 14) for generating the sleep release data string and the sleep release data string generated by the process of the sleep release data string generating step are Including a transmission (control) step (for example, the process of step S11 in FIG. 14) that is transmitted to another information processing apparatus via the network (process is controlled), and is generated by the process of the dormancy release data string generation step. When the n is a predetermined integer of 2 or more, the data of a predetermined byte is stored n times. Ri returned by data composed of (e.g., pre-data, the data constituting the main data, and each post data) configured to include a plurality of.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  FIG. 6 shows a system diagram of a communication system to which the present invention is applied.

  The personal computers 11-1 to 11-n are connected to the network 12 so that data can be transmitted and received between them. The network 12 is, for example, 10 Gbit Ethernet (registered trademark).

  10 Gbit Ethernet (registered trademark) conforms to the IEEE802.3ae standard, and transmits and receives information using a high-speed medium such as an optical fiber cable.

  In the following description, the personal computers 11-1 to 11-n are simply referred to as personal computers 11 when it is not necessary to individually distinguish them.

  FIG. 7 is a block diagram showing a configuration of the personal computer 11 of FIG.

  7 includes a CPU 31, a ROM 32, a bus 34, an input / output interface 35, an input unit 36, an output unit 37, a recording unit 38, a network card 39, and a drive 40.

  As shown in FIG. 7, a CPU (Central Processing Unit) 31 is connected to a ROM (Read Only Memory) 32 and a RAM (Random Access Memory) 33 via a bus 34. The CPU 31 executes various processes according to a program stored in the ROM 32 or a program recorded in the recording unit 38.

  For example, the CPU 31 controls the network card 39 in order to execute the so-called remote wake-up corresponding to the above-described Wake On LAN for the other personal computers 11 connected via the network 12, and will be described later. A state in which power consumption other than the first function for generating and transmitting the sleep release data sequence to be transmitted or the data receiving function by the network card 39 can be reduced, that is, so-called sleep mode, sleep state, power save In a state called a mode, a sleep state, etc., it has at least one of the second functions that can cancel the sleep mode based on a control signal supplied from the network card 39. .

  The RAM 33 appropriately stores data necessary for the CPU 31 to execute various processes. The RAM 33 also has a storage area for descriptors and packets for the network card 39 to perform DMA transfer.

  An input / output interface 35 is also connected to the CPU 31 via the bus 34. The input / output interface 35 is connected to an input unit 36 such as a keyboard and a mouse, and an output unit 37 such as an LCD (Liquid Crystal Display) or a CRT (Cathode Ray Tube) display. The CPU 31 executes various processes in response to commands input from the input unit 36. Then, the CPU 31 outputs an image, sound, or the like obtained as a result of the processing to the output unit 37.

  The recording unit 38 connected to the input / output interface 35 is composed of, for example, a hard disk and records programs executed by the CPU 31 and various data.

  The network card 39 performs DMA transfer. For example, the network card 39 reads a packet stored in the RAM 33 based on a descriptor stored in the RAM 33 and transmits the packet to another device (another personal computer 11) via the network 12. The network card 39 receives a packet from another device via the network 12, and stores the packet in the RAM 33 based on the descriptor.

  Further, the network card 39 generates a sleep release data string based on the control of the CPU 31 and transmits it to the other personal computer 11 or the sleep release data transmitted from the other personal computer 11 in the sleep mode. It has at least one of functions for detecting a row, generating a control signal for releasing the sleep mode, and supplying the control signal to the CPU 31.

  The drive 40 connected to the input / output interface 35 drives them when a removable medium 41 such as a magnetic disk, an optical disk, a magneto-optical disk, or a semiconductor memory is mounted, and programs and data recorded there. Get etc. The acquired program and data are transferred to the recording unit 38 and recorded as necessary.

  FIG. 8 shows a first configuration example of the network card 39. The network card 39 generates a sleep release data string for releasing the sleep state of another personal computer 11 and transmits it to the other personal computer 11. It is a block diagram which shows the further detailed structure of the network card 39-1 which has 1 function.

  The network card 39-1 includes a PCIe (PCI Express) 61, an XGMII 62, a PHY 63, and a sleep release data string generation unit 64. Here, it is assumed that the PHY, XGMII, and MAC frames conform to the IEEE802.3ae standard such as 10GBASE-X, and the PCIe conforms to the PCI Express standard.

  That is, the PCIe 61 includes a network card 39-1 which is a 10 Gbit Ethernet (registered trademark) card, and a main body (a main part other than the network card 39-1 including the CPU 31) of the personal computer 11 which is a terminal serving as a network node. And is compliant with the PCI Express standard, which is a high-speed dual serial interface standard. The PCIe 61 receives the transmission data read from the RAM 33 via the bus 34 and the input / output interface 35, supplies this to the XGMII 62, and receives the reception data supplied from the XGMII 62 with the input / output interface 35. The data is supplied to the RAM 33 via the bus 34.

  The XGMII 62 is an interface between the physical layer and the data link layer of the protocol stack, that is, an interface between the PCIe 61 and the PHY 63, and performs parallel transfer of MAC frame data.

  Furthermore, the XGMII 62 is an interface between the PCIe 61 and the PHY 63 and an interface between the sleep release data string generation unit 64 and the PHY 63, and performs parallel transfer of MAC frame data.

  Specifically, the XGMII 62 is a medium-independent interface that conforms to a common interface standard between a MAC (Media Access Control) layer and a physical layer (PHY). The XGMII 62 has a 32-bit data transfer signal line for transmission and reception. For example, in receiving data, as described with reference to FIG. 2, a set of 1 byte (8 bits) is used as a lane. In other words, the data is output to “lane 0”, “lane 1”, “lane 2”, and “lane 3” in order from the first byte of the received MAC frame, and the PCIe 61 receives data for each lane. It is made to receive the supply of.

  As shown in FIG. 9, the XGMII 62 transmits and receives a 4-byte (32-bit) wide signal both at the rising edge and the falling edge of the 156.25 MHz clock.

  As shown in FIG. 10, the XGMII 62 receives 8 bits as one lane and receives data received at the rising and falling edges in the same lane, and as shown in FIG. 11, 8 bits as one lane. There is an 8-lane system that receives data received at the rising edge and falling edge, respectively.

  The PHY 63 converts the transmission data of the digital signal sequence supplied from the XGMII 62 into a signal that can be transmitted using a medium such as an optical fiber, and transmits the signal to a predetermined transmission destination via the network 12. The reception data transmitted via the digital signal is converted into a digital signal sequence and supplied to the XGMII 62. In addition, the PHY 63 receives a dormancy release data string (to be described later) from the dormancy cancellation data string generation unit 64, converts it into a signal that can be transmitted using a medium such as an optical fiber, and the like, through the network 12. Send to the destination.

  When the CPU 31 instructs the other personal computer 11 connected to the network 12 to execute remote wakeup, the sleep release data sequence generation unit 64 uses sleep release data to be described later with reference to FIG. A sequence is generated and supplied to the XGMII 62 for transmission.

  FIG. 12 shows a second configuration example of the network card 39. In a so-called sleep mode, a sleep release data string received from another personal computer 11 is detected, and the CPU 31 is put to sleep. It is a block diagram which shows the further detailed structure of the network card 39-2 which has the 2nd function which notifies that the cancellation | release data sequence was detected.

  In addition, the same code | symbol is attached | subjected to the same thing as FIG. 8, and the detailed description is abbreviate | omitted suitably.

  That is, the network card 39-2 in FIG. 12 has been described with reference to FIG. 8 except that the PS Manager 71 and the sleep release data string detection unit 72 are provided instead of the sleep release data string generation unit 64. The network card 39-1 has basically the same configuration.

  The XGMII 62 is an interface between the physical layer and the data link layer of the protocol stack, that is, an interface between the PCIe 61 and the PHY 63, and an interface between the dormancy release data string detection unit 72 and the PHY 63, and performs parallel transfer of MAC frame data. .

  The PS Manager 71 performs power management of the network card 39 based on the control of the CPU 31 and whether or not a sleep release data string is detected by the sleep release data string detection unit 72. When the personal computer 11 transitions from the normal state to the sleep mode, the PS Manager 71 activates the dormancy release data string detection unit 72 based on the control of the CPU 31, and the data string received by the PHY 63 is transmitted via the XGMII 62. This is supplied to the dormancy release data string detection unit 72.

  At this time, since the PS Manager 71 does not transmit information via the network 12 in the sleep mode, functions other than those related to detection of the sleep release data sequence, that is, functions on the receiving side of the PHY 63 and the XGMII 62, and sleep Other than the function of the release data string detection unit 72, that is, all data transmission mechanisms may be put to sleep. In this case, further power saving during sleep can be achieved.

  The sleep release data string detection unit 72 analyzes the reception data supplied from the XGMII 62 in the sleep mode, and determines whether it is a sleep release data string. When detecting the sleep release data string, the sleep release data string detection unit 72 notifies the PS Manager 71 that the sleep release data string has been detected.

  When the PS Manager 71 receives notification from the sleep release data string detection unit 72 that a sleep release data string has been detected, the PS Manager 71 notifies the CPU 31 that a sleep release data string has been detected. The CPU 11 changes the state of the personal computer 11 from the sleep mode to the normal state, ends the processing of the sleep release data string detection unit 72, and transmits / receives data between the XGMII 62 and the PCIe 61.

  FIG. 13 is a third configuration example of the network card 39, which generates a sleep release data string for another personal computer 11 and transmits it to the other personal computer 11; In a state called a sleep mode, it has both a second function for detecting a sleep release data string received from another personal computer 11 and notifying the CPU 31 that the sleep release data string has been detected. It is a block diagram which shows the further detailed structure of the network card 39-3.

  The same components as those in FIG. 8 or FIG. 12 are denoted by the same reference numerals, and detailed description thereof will be omitted as appropriate.

  That is, the network card 39-3 in FIG. 13 is provided with the same PCIe 61, XGMII 62, and PHY 63 as in FIGS. 8 and 12, and the same dormancy release data string generation unit as in FIG. 64, and the same PS Manager 71 and dormancy release data string detector 72 as in FIG.

  The PCIe 61 is an interface between the network card 39-3 and the main body of the personal computer 11 (main parts other than the network card 39-3 including the CPU 31) and conforms to the PCI Express standard, which is a high-speed dual serial interface standard. When the transmission data read from the RAM 33 is supplied via the bus 34 and the input / output interface 35, the transmission data is supplied to the XGMII 62 and the reception data supplied from the XGMII 62 is supplied to the input / output interface. It is supplied to the RAM 33 via the 35 and the bus 34.

  The XGMII 62 is an interface between the physical layer and the data link layer of the protocol stack, that is, an interface between the PCIe 61 and the PHY 63, the dormancy release data string generation unit 64 and the PHY 63, or the dormancy release data string detection unit 72 and the PHY 63. Performs parallel data transfer.

  The PHY 63 converts the transmission data of the digital signal sequence supplied from the XGMII 62 into a signal that can be transmitted using a medium such as an optical fiber, and transmits the signal to a predetermined transmission destination via the network 12. The reception data transmitted via the digital signal is converted into a digital signal sequence and supplied to the XGMII 62. In addition, the PHY 63 receives a dormancy release data string (to be described later) from the dormancy cancellation data string generation unit 64, converts it into a signal that can be transmitted using a medium such as an optical fiber, and the like, through the network 12. Send to the destination.

  When the CPU 31 instructs the other personal computer 11 connected to the network 12 to execute remote wakeup, the sleep release data string generation unit 64 uses the sleep release data described with reference to FIG. A sequence is generated, supplied to the XGMII 62, and transmitted to the network 12 via the PHY 63.

  The PS Manager 71 performs power management of the network card 39 based on the control of the CPU 31 and whether or not a sleep release data string is detected by the sleep release data string detection unit 72. When the personal computer 11 transitions from the normal state to the sleep mode, the PS Manager 71 activates the dormancy release data string detection unit 72 based on the control of the CPU 31, and the data string received by the PHY 63 is transmitted via the XGMII 62. This is supplied to the dormancy release data string detection unit 72.

  The sleep release data string detection unit 72 analyzes the reception data supplied from the XGMII 62 in the sleep mode, and determines whether it is a sleep release data string. When detecting the sleep release data string, the sleep release data string detection unit 72 notifies the PS Manager 71 that the sleep release data string has been detected.

  When the PS Manager 71 receives notification from the sleep release data string detection unit 72 that a sleep release data string has been detected, the PS Manager 71 notifies the CPU 31 that a sleep release data string has been detected. The CPU 11 changes the state of the personal computer 11 from the sleep mode to the normal state. Then, the PS Manager 71 terminates the processing of the sleep release data string detection unit 72 so that transmission / reception data is exchanged between the XGMII 62 and the PCIe 61.

  Next, remote wake-up processing in this network will be described with reference to the flowchart of FIG.

  In FIG. 14, the CPU on the receiving side is the CPU 31 of the personal computer 11 having the PS Manager 71 and the network card 39-2 or the network card 39-3 having the dormancy release data string detecting unit 72, and the receiving side. These network cards are the PS Manager 71 and the network card 39-2 or the network card 39-3 having the sleep release data string detection unit 72. The CPU and the network card on the transmission side are the CPU 31 of the personal computer 11 having the network card 39-1 or the network card 39-3 having the sleep release data string generating unit 64, the network card 39-1 or the network card 39-. 3. Therefore, in FIG. 14, the personal computer on the receiving side will be described as a personal computer 11-1, and the personal computer on the transmitting side will be described as a personal computer 11-2.

  In step S1, the CPU 31 of the personal computer 11-1 sets various names, for example, whether or not the user's operation input has been performed for a predetermined time or more, or whether or not the user has been instructed to enter the sleep state (sleep mode). To determine whether or not to shift to the sleep state. If it is determined in step S1 that the sleep state is not shifted, the process of step S1 is repeated.

  If it is determined in step S1 that the computer has transitioned to the sleep state, in step S2, the CPU 31 of the personal computer 11-1 sends the sleep release data during sleep to the PS Manager 71 of the network card 39-2 or the network card 39-3. If a row is detected, a command is sent that permits sleep cancellation.

  In step S <b> 3, the network card 39-2 of the personal computer 11-1 or the PS Manager 71 of the network card 39-3 determines whether or not a command for permitting sleep release is received from the CPU 31. If it is determined in step S3 that an instruction for permitting sleep release is not received, the process of step S3 is repeated until it is determined that an instruction for permitting sleep release is received.

  If it is determined in step S3 that an instruction for permitting sleep release is received, in step S4, the network card 39-2 of the personal computer 11-1 or the PS Manager 71 of the network card 39-3 is stored in the internal buffer. Set the dormancy release enable flag.

  In step S5, the CPU 31 of the personal computer 11-1 sends a sleep command to the network card 39-2 or the network card 39-3.

  In step S6, the CPU 31 of the personal computer 11-1 can reduce, for example, power consumption other than the data reception function by the network card 39, that is, a so-called sleep state, sleep mode, power save mode, sleep state. And so on.

  In step S 7, the network card 39-2 of the personal computer 11-1 or the PS Manager 71 of the network card 39-3 that has received the sleep command sent from the CPU 31 determines whether or not the sleep release enable flag is set. . If it is determined in step S7 that the dormancy release enable flag is not set, the process returns to step S3, and the subsequent processes are repeated.

  If it is determined in step S7 that the sleep cancel enable flag is set, in step S8, the network card 39-2 of the personal computer 11-1 or the PS Manager 71 of the network card 39-3 detects the sleep cancel data string. The unit 72 is activated.

  At this time, since the PS Manager 71 does not transmit information via the network 12 in the sleep mode, functions other than those related to detection of the sleep release data sequence, that is, functions on the receiving side of the PHY 63 and the XGMII 62, and sleep Other than the function of the release data string detection unit 72, that is, all data transmission mechanisms may be put to sleep. In this case, further power saving during sleep can be achieved.

  In step S9, the CPU 31 of the personal computer 11-2 determines whether or not it has been commanded to remotely activate a dormant network node on the network. If it is determined in step S9 that no command has been given, the process in step S9 is repeated until it is determined that a command has been given to remotely activate a dormant network node on the network.

  If it is determined in step S9 that it has been instructed to remotely activate the dormant network node, in step S10, the CPU 31 of the personal computer 11-2 generates a dormancy release data string and stores it in a predetermined format. A control signal to be transmitted to the sleeping network node (in this case, the personal computer 11-1) is supplied to the network card 39-1 or the network card 39-3. The sleep release data string generation unit 64 of the network card 39-1 or the network card 39-3 generates a sleep release data string, which will be described later with reference to FIG. 15, FIG. 16, or FIG. 21, and supplies it to the XGMII 62.

  In step S <b> 11, the XGMII 62 of the personal computer 11-2 transfers the supplied sleep release data string to the PHY 63 in parallel. The PHY 63 converts the dormancy release data sequence of the digital signal sequence supplied from the XGMII 62 into a signal that can be transmitted using a medium such as an optical fiber, and transmits the signal to the personal computer 11-1 via the network 12. .

  In step S12, the network card 39-2 of the personal computer 11-1 or the PHY 63 of the network card 39-3 determines whether any data including multicast or broadcast has been received. If it is determined in step S12 that no data has been received, the process in step S12 is repeated until it is determined that data has been received.

  If it is determined in step S12 that data has been received, in step S13, the network card 39-2 of the personal computer 11-1 or the PHY 63 of the network card 39-3 converts the received data into a dormancy release data string detection unit. 72. The dormancy release data string detection unit 72 acquires the data received from the PHY 63 in 4 lanes or 8 lanes.

  In step S14, a sleep release data string collation process, which will be described later with reference to FIG. 25, is executed.

  In step S15, the network card 39-2 of the personal computer 11-1 or the PS Manager 71 of the network card 39-3 determines whether or not a sleep release data string is detected. In step S15, when it is determined that the dormancy release data string has not been detected, the process returns to step S12, and the subsequent processes are repeated.

  If it is determined in step S15 that a dormancy release data string has been detected, in step S16, the network card 39-2 of the personal computer 11-1 or the PS Manager 71 of the network card 39-3 receives the PCIe 61, the input / output interface 35, Further, the CPU 31 is notified of cancellation of sleep through the bus 34.

  In step S17, the network card 39-2 of the personal computer 11-1 or the PS Manager 71 of the network card 39-3 stops the sleep release data string detection unit 72. The sleep release data string detection unit 72 stops the function based on the control of the PS Manager 71.

  In step S18, the CPU 31 of the personal computer 11-1 ends the sleep state, and the process is ended.

  Through such processing, a sleep release data string for re-wake wakeup is exchanged via the network 12.

  The sleep release data string generation unit 64 generates a sleep release data string transmitted to the network card 39-2 or the network card 39-3, which is a 10 Gbit Ethernet (registered trademark) card having the MAC address shown in FIG. Generated at the time of 8 hours and 8 lanes, respectively. In FIG. 15, frames (boxes) indicated as a0 to a5 indicating data each indicate 1 byte. Further, a0 shown in FIG. 15 indicates the least significant byte of the MAC address, and in order, a1 and a3, and a5 indicates the most significant byte.

  FIG. 16 shows a dormancy release data string in the 4-lane method. Also in FIG. 16, the frame (box) indicating data indicates 1 byte. The sleep release data string is composed of n prefix data, m main data, and p suffix data. First, the prefix data is 4-byte data in which all the numbers are FFh, and is repeated a predetermined n times (for example, 4 times). Next, the main data consists of 4 bytes for the least significant byte of the MAC address, a1 for the second byte of the MAC address, 4 bytes for a2, 4 bytes for a2, 4 bytes for a3, 4 bytes for a4, and The upper byte a5 is composed of 4 bytes each, and this main data is repeated a predetermined m times (for example, 8 times). Lastly, the postfix data is 4-byte data in which all the numbers are FFh, and is constituted by continuing predetermined p times (for example, 3 times).

  FIG. 17 to FIG. 19 show the received data string when the sleep release data string described with reference to FIG. 16 is received in four lanes in the personal computer 11 having the network card 39-2 or the network card 39-3. It explains using.

  As shown in FIG. 17, in Lane 0 to Lane 3, the same data string in the order of the first n FFhs, m MAC addresses, and p FFhs is received. The sleep release data string as fixed data described with reference to FIG. 16 is inserted in an arbitrary part, but as shown in FIG. 18, the head of the sleep release data string is received from a lane other than lane 0. Even in this case, the same lane dormancy release data string is received in each lane. In the following description, the data sequence shown in FIG. 19 that is received in each lane is referred to as a lane sleep release data sequence.

  With reference to FIG. 20, a description will be given of detection of a dormancy release data string in the case of four lanes. FIG. 20 is a diagram illustrating a functional configuration example for realizing the function of detecting the sleep release data string in 4 lanes by the sleep release data string detection unit 72. The sleep release data string detection unit 72 detects the sleep release data string using the lane detection circuits 91-1 to 91-4 having the same configuration.

  Each of the lane detection circuits 91-1 to 91-4 includes a buffer having a data amount larger than at least the lane dormancy release data string, which can hold the received data string, and the lane dormancy release data string to be received ( FIG. 19) is held as a fixed data table. The lane detection circuits 91-1 to 91-4 detect the sleep release data string for each lane by comparing the received data string held in the buffer with the lane sleep release data string held as the data table. Each result is supplied to the logical sum circuit 92 (when the sleep detection data string is detected in the lane detection circuits 91-1 to 91-4, 1 is supplied to the logical sum circuit 92). Then, the detection result in each lane is synthesized (logical sum is output) by the logical sum circuit 92, so that the sleep canceling data string is detected. Specifically, the lane detection circuits 91-1 to 91-4 compare the buffers of each lane with the lane dormancy release data string that is a fixed data table, and set a detection flag when all match, When the detection flag is set, the output of the OR circuit 92 is 1, so that the sleep cancel data string is detected.

  FIG. 21 shows a dormancy release data string for 8 lanes. Also in FIG. 21, a frame (box) indicating data indicates 1 byte. The sleep release data string is composed of n ′ prefix data, m ′ main data, and p ′ suffix data. First, the prefix data is 8-byte data in which all the numbers are FFh, and is repeated a predetermined n ′ times (for example, 4 times). Next, the main data consists of 8 bytes for the lowest byte of the MAC address, a1 for the second byte of the MAC address, 8 bytes for a2, 8 bytes for a2, 8 bytes for a3, 8 bytes for a4, The upper byte a5 is composed of 8 bytes each, and this main data is repeated a predetermined m ′ times (for example, 8 times). Finally, the postfix data is 8-byte data in which all the numbers are FFh, and is configured to continue for a predetermined p 'times (for example, 3 times).

  FIG. 21 is a diagram illustrating a received data string when the dormancy release data string in the case of 8 lanes described with reference to FIG. 21 is received in 8 lanes in the personal computer 11 having the network card 39-2 or the network card 39-3. 22 will be described.

  As shown in FIG. 22, in Lane 0 to Lane 7, the same data string in the order of first n ′ FFh, m ′ MAC address, and p ′ FFh is received. The fixed data described with reference to FIG. 21 is also inserted into an arbitrary part. However, as in the case described with reference to FIG. 18, when the head of the dormancy release data string is received from a lane other than lane 0. Even in this case, the same lane dormancy release data string is received in each lane.

  With reference to FIG. 23, a description will be given of detection of a dormancy release data string in the case of 8 lanes. FIG. 23 is a diagram illustrating an example of a functional configuration for realizing a sleep cancellation data string detection function in 8 lanes by the sleep cancellation data string detection unit 72. The dormancy release data string detection unit 72 uses the lane detection circuits 91-1 to 91-8 having the same configuration to compare the buffer of each lane with the lane dormancy release data string that is a fixed data table, thereby making the dormancy for each lane. The release data string is detected, and each result is synthesized by the OR circuit 101 to detect the sleep release data string.

  Hereinafter, in particular, when it is not necessary to distinguish the lane detection circuits 91-1 to 91-4 or the lane detection circuits 91-1 to 91-8, they are simply referred to as the lane detection circuit 91. To do.

  By the way, in the dormancy cancellation data string described above, the data length of the front data and the rear data may be a byte length that is an integral multiple of the number of lanes in both cases of 4 lanes and 8 lanes. The content of the data may be any predetermined data. Regarding the creation of the main data, first, the original data may be arbitrary fixed data determined in advance, and the number of consecutive bytes may be a byte length that is an integral multiple of the number of lanes. In addition, repetition of the prefix data, main data, and postfix data is to prevent false detection, and the number of repetitions of each is sufficiently long so as not to cause false detection and should be in accordance with the packet length regulations. That's fine.

  Therefore, in the above, as an example, two examples of the sleep release data string of 4 lanes and 8 lanes have been described. However, the sleep release data string of 8 lanes may be used as the sleep release data string of 4 lanes. Needless to say, it is good. In this case, as shown in FIG. 24, the dormancy release data sequence received in each lane is obtained by doubling each byte of the above-described 4-lane lane dormancy release data sequence. The first n data strings α (FFh × 2), m data strings β (each MAC address byte × 2), and p data strings γ (FFh × 2) are the same. A data string is received.

  Next, with reference to the flowchart of FIG. 25, the sleep canceling data string collation process executed in step S14 of FIG. 14 will be described.

  In step S41, the network card 39-2 of the personal computer 11-1 or the dormancy release data string detection unit 72 of the network card 39-3 detects whether or not a start code of the MAC frame has been detected in the supplied reception data. to decide. If it is determined in step S41 that the start code of the MAC frame has not been detected, the process of step S41 is repeated until it is determined that the start code of the MAC frame has been detected.

  If it is determined in step S41 that the start code of the MAC frame has been detected, a lane detection process to be described later with reference to FIG. 25 is executed in step S42.

  In step S43, the network card 39-2 of the personal computer 11-1 or the sleep release data string detection unit 72 of the network card 39-3 determines whether or not the detection flag is set in all lanes. That is, the dormancy cancellation data string detection unit 72 is illustrated in all of the lane detection circuits 91-1 to 91-4 in FIG. 21 or in all of the lane detection circuits 91-1 to 91-8 in FIG. It is determined whether or not the lane dormancy cancellation data string shown in 19 is detected.

  If it is determined in step S43 that the detection flag has been set for all lanes, in step S43, the network card 39-2 of the personal computer 11-1 or the sleep release data string detection unit 72 of the network card 39-3 The PS Manager 71 is notified that the dormancy release data string has been detected, and the process is terminated.

  As described above, the PS Manager 71 notifies the CPU 31 that the sleep release data string has been detected. The CPU 11 changes the state of the personal computer 11 from the sleep mode to the normal state. Then, the PS Manager 71 terminates the process of the dormancy release data string detection unit 72 and controls the transmission / reception data to be exchanged between the XGMII 62 and the PCIe 61 (the processes of steps S16 to S18 in FIG. 14 are executed). ).

  If it is determined in step S43 that the detection flag has not been set in all lanes, the sleep release data string detection unit 72 of the network card 39-2 of the personal computer 11-1 or the network card 39-3 is determined in step S43. Notifies the PS Manager 71 that the sleep release data string has not been detected, and the process is terminated.

  As described above, the PS Manager 71 continues (the process proceeds from step S15 to step S12 in FIG. 14), and the received data string received by the PHY 63 is sent to the dormancy cancellation data string detection unit 72 via the XGMII 62. Then, the dormancy canceling data string is detected, and the process is terminated.

  Next, the lane detection process executed in step S42 of FIG. 25 will be described with reference to the flowchart of FIG.

  In step S61, the dormancy cancellation data string detection unit 72 detects in all of the lane detection circuits 91-1 to 91-4 in FIG. 21 or in all of the lane detection circuits 91-1 to 91-8 in FIG. Clear the flag.

  In step S62, each of the lane detection circuits 91 of the dormancy release data string detection unit 72 is supplied with the data string.

  In step S63, each of the lane detection circuits 91 of the dormancy cancellation data string detection unit 72 receives the data by comparing the buffer holding the reception data string with the lane dormancy cancellation data string held in the fixed data table. It is determined whether or not the data string is a lane sleep release data string.

  In step S63, the lane detection circuit 91 of the dormancy cancellation data string detection unit 72 that has determined that the received data string is a lane dormancy cancellation data string sets a detection flag in step S64. It returns to step S42 and progresses to step S43.

  In step S63, the lane detection circuit 91 of the dormancy cancellation data string detection unit 72, which has determined that the received data string is not the lane dormancy cancellation data string, determines whether or not the end code of the MAC frame has been detected in step S65. to decide.

  If it is determined in step S65 that the end code of the MAC frame has not been detected, the process returns to step S62, and the subsequent processes are repeated. If it is determined in step S65 that the end code of the MAC frame has been detected, the process returns to step S42 in FIG. 25 and proceeds to step S43.

  That is, when detecting the end code of the MAC frame, the dormancy cancellation data string detection unit 72 refers to the detection flag of each lane detection circuit 91 and determines whether or not the detection flag is set in all lanes (see FIG. 25 step S43).

  By such processing, the lane dormancy release data string is collated for each lane, and if the lane dormancy release data string is detected in all lanes, it is determined that the dormancy release data string has been detected.

  Here, as an embodiment, the processing of the network card 39, which is a 10 Gbit Ethernet (registered trademark) card compliant with XGMII, has been described, but the present invention is applicable even when the network is not 10 Gbit Ethernet (registered trademark). In addition, even in cases other than XGMII, the present invention is applicable when parallel transfer is generally used for the interface between the physical layer and the data link layer to transmit a plurality of bytes. .

  Further, even when the number of lanes of transmission / reception data is other than 4 lanes or 8 lanes, for example, 16 lanes, the optimum sleep release data string can be determined in the same manner as described above. For example, when x (x is a positive integer greater than or equal to 2) lane is used, the network card 39 that generates the dormancy release data string is data constituting each of the front data, main data, and rear data. As described above, it is sufficient to generate a dormancy release data sequence in which data of the same byte is repeated x times, and the network card 39 that receives the dormancy release data sequence also detects the lane dormancy release data sequence. X lane detection circuits 91 may be provided.

  In the example of this embodiment, one lane is set to 1 byte, but it is needless to say that one lane may be set to a plurality of bytes according to the processing capability such as 2 bytes or 3 bytes. In this case, the same processing as described above can be performed by converting the byte sequence shown in the present embodiment into a plurality of byte sequences (for example, a 2-byte sequence).

  In the example of the present embodiment, the dormancy release data string is data on the MAC frame. However, the present invention can be applied to any protocol that can transfer in units of packets and can identify the beginning and end of the packet frame. Needless to say.

  As described above, according to the present invention, a dormancy release from a remote place is achieved by a relatively small and simple circuit configuration for a network node whose communication data link layer and physical layer interface is parallel transfer. (Remote wakeup) function can be provided.

  As a result, in a XGMII-compatible LAN controller that performs parallel communication to support high-speed communication such as 10Gbit Ethernet (registered trademark), the Magic Packet inserted at an arbitrary position in the payload of the received packet Compared to the case of using complicated logic such as recognizing patterns by combining data of each lane, the circuit configuration is simplified and the scale is reduced. Price and power consumption can be reduced. Furthermore, since it has become possible to detect a dormancy release data string by a simple comparison of data strings, the detection process of the dormancy release data string in high-speed communication such as 10Gbit Ethernet (registered trademark) has been speeded up. It is expected that the verification items at the time of verification of the system using the present invention are reduced, and bugs that are generated are also reduced.

  The series of processes described above can also be executed by software. The software is a computer in which a program constituting the software is incorporated in dedicated hardware, or a various personal computer capable of executing various functions by installing various programs. For example, it is installed from a recording medium.

  As shown in FIG. 7, the recording medium is distributed to provide a program to the user separately from the computer, and includes a magnetic disk (including a flexible disk) on which the program is recorded, an optical disk (CD-ROM ( Removable media 41 including a compact disk-read only memory (DVD) (including a digital versatile disk (DVD)), a magneto-optical disk (including an MD (mini-disk) (trademark)), or a semiconductor memory.

  Further, in the present specification, the step of describing the program recorded on the recording medium is not limited to the processing performed in chronological order according to the described order, but may be performed in parallel or It also includes processes that are executed individually.

  In the present specification, the term “system” represents the entire apparatus constituted by a plurality of apparatuses.

  The embodiment of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the gist of the present invention.

It is a figure for demonstrating the MAC frame of IEEE802.3 standard. It is a figure for demonstrating the reception process of XGMII. It is a figure for demonstrating the malfunction at the time of receiving Magic Packet with the LAN controller corresponding to XGMII. It is a figure for demonstrating the malfunction at the time of receiving Magic Packet with the LAN controller corresponding to XGMII. It is a figure for demonstrating the malfunction at the time of receiving Magic Packet with the LAN controller corresponding to XGMII. It is a figure for demonstrating the network system to which this invention is applied. It is a block diagram which shows the structure of the personal computer of FIG. It is a block diagram which shows the 1st structural example of the network card of FIG. FIG. 9 is a diagram for explaining XGMI data transmission / reception processing of FIG. 8; It is a figure for demonstrating a 4 lane system. It is a figure for demonstrating an 8 lane system. It is a block diagram which shows the 2nd structural example of the network card of FIG. It is a block diagram which shows the 3rd structural example of the network card of FIG. It is a flowchart for demonstrating a remote wakeup process. It is a figure for demonstrating a MAC address. It is a figure for demonstrating the dormancy cancellation | release data sequence in a 4 lane system. It is a figure for demonstrating the received data sequence when the dormancy cancellation | release data sequence of FIG. 16 is received. It is a figure for demonstrating the received data sequence when the dormancy cancellation | release data sequence of FIG. 16 is received. It is a figure for demonstrating a lane dormancy cancellation | release data string. It is a figure for demonstrating the detection of the dormancy cancellation | release data sequence in the case of 4 lanes. It is a figure for demonstrating the dormancy cancellation | release data sequence in an 8-lane system. It is a figure for demonstrating the received data sequence when the dormancy cancellation | release data sequence of FIG. 21 is received. It is a figure for demonstrating the detection of the dormancy cancellation | release data sequence in the case of 8 lanes. It is a figure for demonstrating the case where the sleep release data sequence of 8 lanes is used for the sleep release data sequence of 4 lanes. It is a flowchart for demonstrating a dormancy cancellation | release data string collation process. It is a flowchart for demonstrating a lane detection process.

Explanation of symbols

  11 Personal Computer, 12 Network, 39 Network Card, 61 PCIe, 62 XGMII, 63 PHY, 64 Dormant Release Data Sequence Generation Unit, 71 PS Manager, 72 Dormant Release Data Sequence Detection Unit, 91 Lane Detection Circuit, 92, 101 OR circuit

Claims (22)

A first information processing device that transmits a dormancy release data sequence;
In the information processing system configured with the second information processing device that releases the sleep state when the sleep release data string is received in the sleep state,
The first information processing apparatus includes:
A sleep release data string generating means for generating the sleep release data string;
Transmitting means for transmitting the dormancy release data string generated by the dormancy release data string generation means to the second information processing apparatus via a predetermined network;
The dormancy release data sequence generated by the dormancy release data sequence generation unit includes a plurality of data configured by repeating predetermined byte data n times when n is a predetermined integer equal to or greater than 2. And
The second information processing apparatus
Receiving means for receiving the dormancy release data string transmitted from the first information processing apparatus via the predetermined network;
First interface means for exchanging data between the physical layer and the data link layer of the protocol stack by parallel communication;
Detecting means for detecting the dormancy release data string received by the receiving means and supplied via the first interface means, and
The first interface unit distributes a data string supplied from the data link layer to the physical layer to n lanes that are predetermined integers of 2 or more for each predetermined byte,
The detection means includes lane detection means for n lanes,
The lane detection unit receives supply of a data string of one lane among n lanes distributed by the first interface unit, and the supplied data string is composed of non-repeated data of the predetermined bytes. It is detected whether or not the data string has a data length of 1 / n of the dormancy release data string, and in the lane detection means for n lanes, the supplied data string is 1 / n of the dormancy release data string An information processing system that determines that the dormancy release data string has been detected when the data string matches the data length of the data length of. The first information processing apparatus includes:
A second interface means for exchanging data between the physical layer of the protocol stack and the data link layer by parallel communication;
The second interface means converts an n-lane data string supplied from the data link layer to the physical layer into a data format suitable for the physical layer,
The transmission means receives the supply of the dormancy release data string generated by the dormancy release data string generation means via the interface means, and transmits the supply to the second information processing apparatus via a predetermined network. The information processing system according to claim 1. The information processing system according to claim 1, wherein the second information processing apparatus further includes a sleep state canceling unit that cancels the sleep state when the sleep canceling data string is detected by the detection unit. The dormancy release data sequence includes a prefix data obtained by repeating data of a first predetermined byte n × a times, and d types of data when a, b, c, and d are each a predetermined integer of 1 or more. The main data constituted by repeating the data of the second predetermined byte n times each further b times, and the postfix data in which the data of the third predetermined byte is repeated n × c times The information processing system according to claim 1, comprising: The information processing system according to claim 1, wherein the predetermined network is 10 Gbit Ethernet (registered trademark). The information processing system according to claim 1, wherein the first interface means exchanges data based on a standard of XGMII (10 Gigabit Media Independent Interface). Receiving means for receiving a dormancy release data string transmitted from another information processing apparatus via the predetermined network;
Interface means for transferring data between the physical layer and the data link layer of the protocol stack by parallel communication;
Detecting means for detecting the dormancy release data string received by the receiving means and supplied via the interface means, and
The dormancy release data sequence received by the receiving means is configured to include data configured by repeating data of a predetermined byte n times when n is a predetermined integer equal to or greater than 2.
The interface means distributes a data string supplied from the data link layer to the physical layer to n lanes that are predetermined integers of 2 or more for each predetermined byte,
The detection means includes lane detection means for n lanes,
The lane detection means receives supply of a data string of one lane among n lanes distributed by the interface means, and the supplied data string includes the non-repeated data of the predetermined bytes. In the lane detection means for n lanes, it is detected whether or not the supplied data string is 1 / n data length of the dormancy release data string. An information processing apparatus that determines that the dormancy release data string is detected when the data string matches the data string of The information processing apparatus according to claim 7, further comprising a sleep state canceling unit that cancels a sleep state when the sleep canceling data string is detected by the detection unit. The dormancy release data sequence includes a prefix data obtained by repeating data of a first predetermined byte n × a times, and d types of data when a, b, c, and d are each a predetermined integer of 1 or more. The main data constituted by repeating the data of the second predetermined byte n times each further b times, and the postfix data in which the data of the third predetermined byte is repeated n × c times The information processing apparatus according to claim 7, comprising: The information processing apparatus according to claim 7, wherein the predetermined network is 10 Gbit Ethernet (registered trademark). The information processing apparatus according to claim 7, wherein the interface unit transmits and receives data based on a standard of XGMII (10 Gigabit Media Independent Interface). In the information processing method of the information processing apparatus for releasing the sleep state when the sleep release data string is received in the sleep state,
A receiving step of receiving a data string transmitted from another information processing apparatus via the predetermined network;
A transfer step of transferring the data string received by the processing of the reception step via an interface that exchanges data between a physical layer and a data link layer of a protocol stack by parallel communication;
A detection step of detecting whether or not the data sequence transferred by the processing of the transfer step is the dormancy release data sequence;
A release step for releasing the sleep state when the data sequence is detected to be the sleep release data sequence by the detection step;
The dormancy cancellation data sequence received by the processing of the reception step includes a plurality of data configured by repeating predetermined bytes of data n times when n is a predetermined integer equal to or greater than 2.
In the process of the transfer step, the data string supplied from the data link layer to the physical layer is distributed to n lanes that are predetermined integers of 2 or more for each predetermined byte.
In the process of the detection step, the data sequence of one lane among the n lanes distributed by the process of the transfer step is 1 / n of the dormancy release data sequence composed of non-repeated data of the predetermined bytes. It is detected whether or not the data string matches the data string of the data length, and when the supplied data string matches the data string having a data length of 1 / n of the dormancy cancellation data string, the dormancy cancellation data string is detected. Information processing method. A program for causing a computer to execute a process of releasing a sleep state when a sleep release data string is received in a sleep state,
A reception control step for controlling reception of a data string transmitted from another information processing apparatus via the predetermined network;
A transfer control step for controlling a process of transferring the data string, the reception of which is controlled by the process of the reception control step, via an interface that exchanges data between a physical layer and a data link layer of the protocol stack by parallel communication; ,
A detection step of detecting whether or not the data string whose transfer is controlled by the process of the transfer control step is the dormancy release data string;
A release step for releasing the sleep state when the data sequence is detected to be the sleep release data sequence by the detection step;
The dormancy cancellation data string whose reception is controlled by the process of the reception control step includes a plurality of data configured by repeating data of a predetermined byte n times when n is a predetermined integer of 2 or more. Configured,
In the process of the transfer control step, the transfer is controlled so that the data string supplied from the data link layer to the physical layer is distributed to n lanes that are two or more predetermined integers for each predetermined byte.
In the process of the detection step, 1 / n of the dormancy release data string in which the data string of one lane among the n lanes distributed by the process of the transfer control step is composed of non-repeated data of the predetermined bytes. If the supplied data string matches a data string with a data length of 1 / n of the dormancy release data string, the dormancy release data string is detected. A program that causes a computer to execute a process that determines that an error has occurred.   A recording medium on which the program according to claim 13 is recorded. A dormancy release data string generating means for generating a dormancy release data string;
Transmission means for transmitting the sleep release data string generated by the sleep release data string generation means to another information processing apparatus via a predetermined network;
The dormancy release data sequence generated by the dormancy release data sequence generation unit includes a plurality of data configured by repeating predetermined byte data n times when n is a predetermined integer equal to or greater than 2. Information processing device. Interface means for exchanging data between the physical layer of the protocol stack and the data link layer by parallel communication;
The interface means converts an n-lane data string supplied from the data link layer to the physical layer into a data format compatible with the physical layer,
The transmission means receives the sleep release data string generated by the sleep release data string generation means via the interface means, and sends the sleep release data string to the other information via a predetermined network. The information processing apparatus according to claim 15, which is transmitted to the processing apparatus. The information processing apparatus according to claim 16, wherein the interface means transmits and receives data based on a standard of XGMII (10 Gigabit Media Independent Interface). The dormancy release data sequence includes a prefix data obtained by repeating data of a first predetermined byte n × a times, and d types of data when a, b, c, and d are each a predetermined integer of 1 or more. The main data constituted by repeating the data of the second predetermined byte n times each further b times, and the postfix data in which the data of the third predetermined byte is repeated n × c times The information processing apparatus according to claim 15. The information processing apparatus according to claim 15, wherein the predetermined network is 10 Gbit Ethernet (registered trademark). In the information processing method of the information processing apparatus for transmitting the dormancy release data string,
A sleep release data sequence generating step for generating the sleep release data sequence;
A transmission step of transmitting the sleep release data string generated by the process of the sleep release data string generation step to another information processing apparatus via a predetermined network;
The dormancy cancellation data sequence generated by the process of the dormancy cancellation data sequence generation step includes a plurality of data configured by repeating data of a predetermined byte n times when n is a predetermined integer equal to or greater than 2. An information processing method comprising: A program for causing a computer to execute a process of transmitting a dormancy release data string,
A sleep release data sequence generating step for generating the sleep release data sequence;
A transmission control step for controlling a process of transmitting the sleep release data string generated by the process of the sleep release data string generation step to another information processing apparatus via a predetermined network,
The dormancy cancellation data sequence generated by the process of the dormancy cancellation data sequence generation step includes a plurality of data configured by repeating data of a predetermined byte n times when n is a predetermined integer equal to or greater than 2. A program that causes a computer to execute a process consisting of   A recording medium on which the program according to claim 21 is recorded.

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