[roll] Roll fuchsia [netstack] Add Rust ICMP ping library
Added a Rust ping library which can be used to send ICMP echo
requests, and verify replies.
A trait is used to abstract over facitilites provided by an async ICMP
socket. Although an implementation of the trait does not exist on
non-fuchsia platforms, the trait enables fakes in tests and describes
the non-portable facilities that are relied upon.
Reachability monitor has been migrated to use this ping library. The
new ping logic sends 3 echo requests on a 1s interval, and considers a
destination reachable iff a valid reply is received within 3 seconds
of the first request. Any error condition results in an unreachable
determination, e.g. socket errors, unable to send within the allotted
1-second duration. Note that as replies are no longer required for
all 3 requests sent, the happy path is now 1RTT compared to 2 seconds.
IPv4 and IPv6 reachability state are now computed in parallel unlike
before. The old C++ ping code has been removed.
Original-Fixed: 75954, 65581
Test: fx test reachability-core-lib-test \
netstack_reachability_integration_test \
ping_test ping-tests
Original-Reviewed-on: https://fuchsia-review.googlesource.com/c/fuchsia/+/528101
Original-Revision: fcabae09932a5a054343042e4295f8b2f8e1b33d
GitOrigin-RevId: 39fa2733473c1314f4fde66002c0265aee951823
Change-Id: If98fe629a3abb7849c5217b753655cf65e54dc5d
This repository contains Fuchsia's Global Integration manifest files.
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Currently all changes must be made by a Google employee. Non-Google employees wishing to make a change can ask for assistance via the IRC channel #fuchsia on Freenode.
First install Jiri.
Next run:
$ jiri init $ jiri import minimal https://fuchsia.googlesource.com/integration $ jiri update
Third party projects should have their own subdirectory in ./third_party.