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CONFIG_NET_SCH_PLUG: Plug network traffic until release (PLUG)

General informations

The Linux kernel configuration item CONFIG_NET_SCH_PLUG:

Help text

This queuing discipline allows userspace to plug/unplug a network output queue, using the netlink interface. When it receives an enqueue command it inserts a plug into the outbound queue that causes following packets to enqueue until a dequeue command arrives over netlink, causing the plug to be removed and resuming the normal packet flow.

This module also provides a generic "network output buffering" functionality (aka output commit), wherein upon arrival of a dequeue command, only packets up to the first plug are released for delivery. The Remus HA project uses this module to enable speculative execution of virtual machines by allowing the generated network output to be rolled back if needed.

For more information, please refer to http://wiki.xensource.com/xenwiki/Remus

Say Y here if you are using this kernel for Xen dom0 and want to protect Xen guests with Remus.

To compile this code as a module, choose M here: the module will be called sch_plug.

Hardware

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