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nic_router: explanatory comment about link objects

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Issue #2609
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Martin Stein 2017-12-20 15:55:12 +01:00 committed by Christian Helmuth
parent 3f74862666
commit 4c76a87fec
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repos/os/src/server/nic_router/link.h
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@ -2,6 +2,22 @@
* \brief State tracking for UDP/TCP connections
* \author Martin Stein
* \date 2016-08-19
*
* A link is in the UDP case the state tracking of a pseudo UDP connection
* (UDP hole punching) and in the TCP case the state tracking of a TCP
* connection. Beside the layer-3 connection state, a link also contains
* information about the routing and the NAT translation that correspond to
* the connection. Link objects have three different functions:
*
* 1) Link objects allow the router to manage the lifetime of resources
* related to a layer-3 connection.
*
* 2) Link objects allow the router to route the back-channel packets of a
* connection without additional routing rules.
*
* 3) Link objects reduce the routing overhead for successive packets of a
* connection as they gather the required information in one place and as
* preprocessed as possible.
*/
/*