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USENIX 2003 Annual Technical Conference, FREENIX Track — Abstract
Pp. 137-150 of the Proceedings

Implementing a Clonable Network Stack in the FreeBSD Kernel

Marko Zec, University of Zagreb


Traditionally, UNIX operating systems have been equipped with monolithic network stack implementations, meaning all user processes have to cooperatively share a single networking subsystem. The introduction of the network stack cloning model enables the kernel to simultaneously maintain multiple independent and isolated network stack instances. Combined with forcible binding of user processes to individual network stacks, this concept can bring us a step closer to an efficient pseudo virtual machine functionality which opens new possibilities particularly in virtual hosting applications, as well as in other less obvious areas such as network simulation and advanced VPN provisioning. This article is focused on design, implementation and performance aspects of experimental clonable network stack support in the FreeBSD kernel.
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Last changed: 7 Nov. 2003 jel
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