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The Network priority rule results in a priority value in the struct lnet_net to be set to the one defined in the rule. The local NID rule results in a priority value in the struct lnet_ni to be set to the one define din defined in the rule. The remote NID rule results in a priority value in the struct lnet_peer_ni to be set to the one defined in the rule. The infrastructure for peer-to-peer rules is implemented via a list of preferred NIDs kept in the struct lnet_peer_ni structure. Once the local network/best NI are already selected, we go through all the peer NIs on the same network and prefer the peer NI which has the best NIs NID on its preferred list. Thereby, preferring a specific pathway between the node and the peer.
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