SYSTEM AND METHOD FOR TRANSMITTING DATA BASED ON PCIe

A method for transmitting data based on Peripheral Component Interconnect Express (PCIe), the method comprising:

• receiving, by a host processing unit, a first PCIe data packet sent by a host that connects to the host processing unit, wherein the first PCIe data packet carries a data payload and terminal routing information of a destination terminal device, and the destination terminal device is a terminal device that needs to receive the first PCIe data packet sent by the host;
• determining, according to a stored second path rule and the terminal routing information, a destination switch terminal device that corresponds to the destination terminal device, wherein the second path rule comprises a correspondence between the destination switch terminal device that needs to be passed through when the host processing unit transmits the first PCIe data packet to the destination terminal device and the destination terminal device;
• constructing, based on the first PCIe data packet, a second PCIe data packet that can be routed by using a PCIe switch from a source switch terminal device that connects to the host processing unit to the destination switch terminal device;
• and
• sending the constructed second PCIe data packet to the source switch terminal device, so that the source switch terminal device routes the second PCIe data packet by using the PCIe switch to the destination switch terminal device according to a first path rule, wherein the second PCIe data packet comprises the data payload, so that after receiving the second PCIe data packet the destination switch terminal device sends the second PCIe data packet to a destination terminal processing unit that connects to the destination switch terminal device, and so that after receiving the second PCIe data packet the destination terminal processing unit parses the second PCIe data packet to obtain the data payload and sends the data payload to the destination terminal device that connects to the destination terminal processing unit, wherein the first path rule comprises a routing path for routing based on the PCIe switch between the switch terminal devices that connect to the PCIe switch, the source switch terminal device is a switch terminal device that connects to the host processing unit, and the destination terminal processing unit is a terminal processing unit that connects to the destination switch terminal device among the multiple terminal processing units.

An apparatus for transmitting data based on Peripheral Component Interconnect Express (PCIe), the apparatus comprising:

• a receiving unit, configured to receive a first PCIe data packet sent by a host, wherein the first PCIe data packet carries a data payload and terminal routing information of a destination terminal device, and the destination terminal device is a terminal device that needs to receive the PCIe data packet sent by the host;
• and
• a constructing unit, configured to determine, according to a stored second path rule and the terminal routing information, a destination switch terminal device that corresponds to the destination terminal device, wherein the second path rule comprises a correspondence between the destination switch terminal device that needs to be passed through when the first PCIe data packet is transmitted according to a first path rule to the destination terminal device and the destination terminal device;
• construct, based on the first PCIe data packet received by the receiving unit, a second PCIe data packet that can be routed by using a PCIe switch from a source switch terminal device to the destination switch terminal device;
• and transmit the second PCIe data packet constructed by the constructing unit to the source switch terminal device, so that the source switch terminal device receives the second PCIe data packet and routes the second PCIe data packet according to the first path rule to the destination switch terminal device by using the PCIe switch, so that after receiving the second PCIe data packet the destination switch terminal device sends the second PCIe data packet to a destination terminal processing unit, and so that after receiving the second PCIe data packet the destination terminal processing unit parses the second PCIe data packet to obtain the data payload and sends the data payload to the destination terminal that connects to the destination terminal processing unit, wherein the first path rule comprises a routing path for routing based on the PCIe switch between the switch terminal devices that connect to the PCIe switch.

An apparatus for transmitting data based on Peripheral Component Interconnect Express (PCIe), the apparatus comprising:

• a host processing unit, which receives a first PCIe data packet sent by a host that connects to the host processing unit, wherein the first PCIe data packet carries a data payload and terminal routing information of a destination terminal device;
• determines, according to a stored second path rule and the terminal routing information, a destination switch terminal device that corresponds to the destination terminal device;
• and constructs, based on the first PCIe data packet, a second PCIe data packet that can be routed from a source switch terminal device to the destination switch terminal device, and sends the second PCIe data packet, wherein the second path rule comprises a correspondence between the destination switch terminal device that needs to be passed through when the host processing unit transmits the first PCIe data packet according to a first path rule to the destination terminal device and the destination terminal device, the destination terminal device is a terminal device that needs to receive the PCIe data packet sent by the host, and the first path rule comprises a routing path for routing based on a PCIe switch between the switch terminal devices that connect to the PCIe switch;
• and
• a source switch terminal device, which connects to the host processing unit, receives the second PCIe data packet from the host processing unit, and routes the second PCIe data packet by using the PCIe switch to the destination switch terminal device according to the first path rule, wherein the second PCIe data packet comprises the data payload, so that after receiving the second PCIe data packet the destination switch terminal device sends the second PCIe data packet to a destination terminal processing unit, and so that after receiving the second PCIe data packet the destination terminal processing unit parses the second PCIe data packet to obtain the data payload and sends the data payload to the destination terminal that connects to the destination terminal processing unit, wherein the first path rule comprises the routing path for the routing based on the PCIe switch between the switch terminal devices that connect to the PCIe switch.