| US 7,519,004 B1 | ||
| Loopback testing of a network interface device from a user-space software layer | ||
| Kiran Kamity, Sunnyvale, Calif. (US); and Hong Huang, San Jose, Calif. (US) | ||
| Assigned to Netowrk Appliance, Inc., Sunnyvale, Calif. (US) | ||
| Filed on Feb. 18, 2005, as Appl. No. 11/61,168. | ||
| Int. Cl. H04L 12/26 (2006.01) | ||
| U.S. Cl. 370—248 [370/249] | 46 Claims |
| 1. A method comprising:
initiating at a network interface device a loopback test of a datalink layer of the network interface device from a user-space
software layer of the network interface device, including generating a test packet having a source and a destination address
associated with the network interface device, where the datalink layer and the user-space software layer are layers of a network
stack on the network interface device;
transmitting the test packet from the user-space software layers of the network interface device through the datalink layer
of the network interface device and out a network connection external to the network interface device;
receiving the transmitted test packet at the network interface device; and
determining at the user-space software layer a result of the loopback test of the datalink layer of the network interface
device by determining whether the received test packet matches the generated test packet.
|