Hybrid network processing load distribution in computing systems

• US 10,554,554 B2
• Filed: 03/15/2017
• Issued: 02/04/2020
• Est. Priority Date: 12/06/2016
• Status: Active Grant

• Current Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Original Assignee: Microsoft Technology Licensing LLC (Microsoft Corporation)
• Inventors: Malloy, Dmitry, Dabagh, Alireza, Silva, Gabriel, To, Khoa, Cardona, Omar, Stanwyck, Donald
• Primary Examiner(s): Morlan, Robert M
• Application Number:
  US15/459,239
• Publication Number:
  US 20180159771A1
• Time in Patent Office: 1,056 Days
• CPC Class Codes: H04L 45/745 Address table lookup; Address filtering
• CPC Class Codes: H04L 45/7452 Multiple parallel or consecutive lookup operations lookup operation involving Bloom filters H04L45/7459
• CPC Class Codes: H04L 45/7453 using hashing
• CPC Class Codes: H04L 47/125 by balancing the load, e.g. traffic engineering
• CPC Class Codes: H04L 47/621 Individual queue per connection or flow, e.g. per VC
• CPC Class Codes: H04L 47/6255 queue load conditions, e.g. longest queue first
• CPC Class Codes: H04L 49/70 Virtual switches
• CPC Class Codes: H04L 49/9068 in the network interface card

Abstract

Embodiments of hybrid network processing load distribution in a computing device are disclosed therein. In one embodiment, a method includes receiving, at a main processor, an indication from the network interface controller to perform network processing operations for first and second packets in a queue of a virtual port of the network interface controller, and in response to receiving the request, assigning first and second cores for performing the network processing operations for the first and second packets, respectively. The method also includes performing the network processing operations at the first and second cores to effect processing and transmission of the first and second packets to first and second applications, respectively, both the first and second applications executing in a virtual machine hosted on the computing device.

Claims

1. A method for network traffic management in a computing device having a network interface controller operatively coupled to a main processor with multiple cores, the method comprising:

receiving, at the network interface controller, a packet having a header and a payload;

assigning, at the network interface controller, the received packet to a virtual port of the network interface controller based on a destination medium access control (“

MAC”

) address contained in the header of the packet;

upon assigning the packet to the virtual port, further assigning, at the network interface controller, the packet to one of the queues in the virtual port based on one or more of a source IP address, a destination IP address, a source port, or a destination port included in the header of the packet;

upon assigning the packet to one of the queues in the virtual port, indicating to the main processor that the assigned queue of the virtual port contains the packet to be processed; and

cooperating with a core assigned by the main processor to execute network processing operations related to the packet to forward the packet in the queue to a destination identified by the MAC address, the source IP address, the destination IP address, the source port, and the destination port included in the header of the packet.

2. The method of claim 1 wherein the MAC address included in the header of the packet identifies a virtual machine or a hypervisor executing on the computing device.

3. The method of claim 1 wherein assigning the packet to one of the queues includes:

calculating, at the network interface controller, a hash value of one or more of the source IP address, the destination IP address, the source port, or the destination port included in the header of the packet; and

identifying the queue as one corresponding to at least a portion of the calculated hash value in a table contained in the network interface controller.

4. The method of claim 1 wherein assigning the packet to the virtual port includes:

extracting the destination MAC address from the header of the packet, the destination MAC address identifies a virtual machine executing on the computing device; and

identifying the virtual port corresponding to the extracted MAC address and corresponding to the virtual machine.

5. The method of claim 1 wherein:

the destination MAC address identifies a virtual machine executing on the computing device;

the destination includes an application executing in the virtual machine; and

causing the core includes causing the core to execute network processing operations to forward the packet in the queue to the application executing in the virtual machine identified by the MAC address.

6. The method of claim 1 wherein:

the destination MAC address identifies a virtual machine executing on the computing device;

the destination includes an application executing in the virtual machine; and

causing the core includes causing the core to executing instructions to enforce communications security, perform network virtualization, translate network addresses, or maintain a communication flow state to forward the packet in the queue to the application executing in the virtual machine identified by the MAC address.

7. The method of claim 1 wherein:

the packet is a first packet having a first header;

the MAC address is a first MAC address; and

the method further includes;

receiving, at the network interface controller, a second packet having a second header containing a second MAC address that is the same as the first MAC address; and

assigning, at the network interface controller, the received second packet to the same virtual port of the network interface controller based on that the second MAC address is the same as the first MAC address.

8. The method of claim 1 wherein:

the packet is a first packet having a first header;

the MAC address is a first MAC address;

the virtual port is a first virtual port; and

the method further includes;

receiving, at the network interface controller, a second packet having a second header containing a second MAC address that is different than the first MAC address; and

assigning, at the network interface controller, the received second packet to a second virtual port of the network interface controller, the second MAC address being different than the first MAC address.

9. The method of claim 1 wherein:

the packet is a first packet having a first header;

the MAC address is a first MAC address and a first destination IP address;

the core is a first core; and

the method further includes;

receiving, at the network interface controller, a second packet having a second header containing a second MAC address that is the same as the first MAC address but a second destination IP address different than the first destination IP address;

assigning, at the network interface controller, the received second packet to the same queue of the same virtual port of the network interface controller based on that the second MAC address and the second destination IP address; and

cooperating with a second core assigned by the main processor to execute network processing operations related to the second packet to forward the second packet in the queue to another destination identified by the second MAC address and the second destination IP address included in the header of the second packet, the second core being different than the first core.