* RIS: Implement cleanup on BMP down event

* Cleanup

Co-authored-by: Maximilian Wilhelm <max@sdn.clinic>

The funtions RegisterWithOptions(), LPPM(), Get() and GetLonger() need
to be exposed by AdjRIBIn/AdjRIBOut. This makes these RIBs usable in
much the same way as LocRIB for the RIS.

If addpath is enabled rx then adjRIBIn.RemovePath() will access a member
of p. As p might be nil (e.g. called by fsm_address_family withdraw())
we need to check for this before accessing it.

* Remove unused function

This unused function triggered go vet

github.com/bio-routing/bio-rd/syscallwrappers
[error]syscallwrappers/syscalls_linux.go:75:9: possible misuse of unsafe.Pointer

* Remove unreachable code

* Use keyed syntax for composite literals

* Remove copies of mutex locks

* Add decoding benchmark

* Add .gitattributes

* Add test data

* Implement decoding speed improvements

* Performance improvements

* Fix tests

* Optimizing values vs ptr.

* Change cache inserts to pointers

* Refactor tests for ip dedup changes

* Fix tests

* Fix types in device protocol tests

* Fix tests

* Fix types in routingtable tests

* Fix kernel package for darwin/win

* Swap BTree with Map

* Drop legacy BMP code

* Drop legacy fib implementation.

* Fix Ptr calls

* Drop unused code

* Drop unused Less functions

* Drop unused copy function

* Drop dead code. Add IP dedup to prefix dedup.

Co-authored-by: Marcus Weiner <marcus.weiner@gmail.com>

* Add caches

* Replace IPs and Prefixes with pointers to these

* Fix nil pointer derefs

* Fix nil pointer deref

* Fix community encoding

* Fix tests

* Fix tests

* Fix tests

* Fix tests

* Fix tests

* Fix tests

* Fix BGP path hashing

* Fix path attr decoding

* Fix tests

* Fix tests

* Fix tests

* Fix tests

* Cleanup

* Cleanup

* Revert config change

* Fix Benchmark. Fix ClusterList PA.

* Fix ClusterList tests

* Add client

* Remove stale test

* Cleanup

* Increase verbosity on decode failure

* Improve chache layer performance

* Improve bgp path cache performance

* Cleanup

* Implementing basic daemon with configuration

* Add daemon

* Implement hot reloadable filters

* Adding more filter actions

* Make filters comparable

* Fix tests

* Fix tests

* Fix tests

* Cleanup

* Cleanup

* Cleanup

* Use documentation prefixes rfc5737

* Correct one prefix

* Fix copy&paste error

* Make BMP server VRF aware

* Implement RIS service

* Remove binary

* Fix .gitignore

* Implement more RPCs

* Implement RIB Observer

* Fix tests

* Implement RIB Dump

* Add support for translating proto BGP Paths into internal paths

* Cleanup

* Fix peer down

* Implement buffered update receiver. Fix route propagation.

* Add metrics

* Add VRF metrics

* Add router label to VRF metrics

* Add peer metrics

* Fix tests

* Fix test

* Fix test

* Fix build

* Add tests

* Add test for unknown path attributes

* Add tests

* Extend test

* Standardize grpc API

* Fix tests

* first steps to metrics

* next small step

* fixed tests

* added comments

* postponed RouterAccepted and RoutesRejected to next step

* read update counters

* added test

* added missing test file

* Route not used any more

* added metrics for session state and time since establish

* increased test coverage, time since establish impl.

* added prom collector

* added metrics endpoint to BGP example

* added metrics for VRF

* removed commented metrics

* fixed logging inconsistency in example

* Update main.go

* gofmt

* fixed typo

* Add Unregister function to VRF to remove VRF from global registry

* Add test for Unregister

* Fix FSM Address Family Init

* Adding tests for fix

* Fix build

* Fix build

* Adding support for dumping BGP RIBin & RIBout

* Fix build

* Add API Server to BGP IPv4 example

* Re-factored Route dumping API to use streaming RPC

* Add benchmark

* Completing benchmark

* Fix atomic stuff

* added unique name for locRIBs

* added VRFs

* added error when no RIB configured in VRF

* vrf unique name ensurance

* fixed examples

* added missing test

* for convenience we provide a default RIB for v4 and v6 on each VRF

* removed debug output in main.go (api is coming)

* also removed debug output from fib example

* removed fib example

Package errors provides simple error handling primitives.
Read more on https://github.com/pkg/errors

This reverts commit 1baef567.

This reverts commit a5bccc29, reversing
changes made to 88c1c813.