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![David Howells](https://secure.gravatar.com/avatar/9ec16e18c2bf1b2893191c0f3e3aed0b.jpg?s=96&d=mm)
David Howells committed cf1a6474f80
rxrpc: Add per-peer RTT tracker Add a function to track the average RTT for a peer. Sources of RTT data will be added in subsequent patches. The RTT data will be useful in the future for determining resend timeouts and for handling the slow-start part of the Rx protocol. Also add a pair of tracepoints, one to log transmissions to elicit a response for RTT purposes and one to log responses that contribute RTT data. Signed-off-by: David Howells <dhowells@redhat.com>