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2021-11-22Unified time for whole BIRDMaria Matejka
In previous versions, every thread used its own time structures, effectively leading to different time in every thread and strange logging messages. The time processing code now uses global atomic variables to keep current time available for fast concurrent reading and safe updates.
2021-11-22Multithreaded BIRD needs reasonably new software to compileMaria Matejka
2021-11-22Route export is now asynchronous.Maria Matejka
To allow for multithreaded execution, we need to break the import-export chain and buffer the exports before actually processing them.
2021-11-22Better profylaction recursive route loopsMaria Matejka
In some specific configurations, it was possible to send BIRD into an infinite loop of recursive next hop resolution. This was caused by route priority inversion. To prevent priority inversions affecting other next hops, we simply refuse to resolve any next hop if the best route for the matching prefix is recursive or any other route with the same preference is recursive. Next hop resolution doesn't change route priority, therefore it is perfectly OK to resolve BGP next hops e.g. by an OSPF route, yet if the same (or covering) prefix is also announced by iBGP, by retraction of the OSPF route we would get a possible priority inversion.
2021-11-22Special table hooks rectified.Maria Matejka
* internal tables are now more standalone, having their own import and export hooks * route refresh/reload uses stale counter instead of stale flag, allowing to drop walking the table at the beginning * route modify (by BGP LLGR) is now done by a special refeed hook, reimporting the modified routes directly without filters
2021-11-22Split route table event into separate eventsMaria Matejka
The former rt_event is dropped in favour of separate table events. This allows for selective corking of NHU and prune.
2021-11-22Moved BFD IO loop out of BFD as we want to use it as socket-io coroutineMaria Matejka
2021-11-22Debug messages with timestamps.Maria Matejka
On most of current hardware, getting monotonic clock is fast enough to get it and write for each debug message.
2021-11-22Fixing expensive list checks. Debug only commit.Maria Matejka
2021-11-22Lock position checking allows for safe lock unionsMaria Matejka
2021-11-22GDB: SKIP_BACK and linked list toolsMaria Matejka
2021-11-22Coroutines: A simple and lightweight parallel execution framework.Maria Matejka
2021-11-22Type checking in SKIP_BACK macroMaria Matejka
2021-11-22Locking subsystem: Just a global BIRD lock to begin with.Maria Matejka
2021-11-22Dropping the POSIX thread-local variables in favor of much easier-to-use C11 ↵Maria Matejka
thread-local variables
2021-11-22POSIX threads and thread-local storage is needed for concurrent executionMaria Matejka
2021-11-22Table import and export are now explicit hooks.Maria Matejka
Channels have now included rt_import_req and rt_export_req to hook into the table instead of just one list node. This will (in future) allow for: * channel import and export bound to different tables * more efficient pipe code (dropping most of the channel code) * conversion of 'show route' to a special kind of export * temporary static routes from CLI The import / export states are also updated to the new algorithms.
2021-11-19Trie: Implement trie walking codeOndrej Zajicek (work)
Trie walking allows enumeration of prefixes in a trie in the usual lexicographic order. Optionally, trie enumeration can be restricted to a chosen subnet (and its descendants).
2021-11-13Trie: Simplify network matching codeOndrej Zajicek (work)
Introduce ipX_prefix_equal() and use it to simplify network matching code.
2021-11-09Secondary and merged exports get a whole feed instead of traversing the ↵Maria Matejka
table structures directly
2021-11-09Route export: rejected by filter bitmapMaria Matejka
If a route has been rejected by filter, store that information to avoid repeated export filter runs on rejected routes.
2021-11-09Nest: Route generations and explicit tracking route propagion through pipesMaria Matejka
2021-11-09Recursive route nexthop updates now announced with valid new_best/old_best ↵Maria Matejka
information
2021-11-09Split route data structure to storage (ro) / manipulation (rw) structures.Maria Matejka
Routes are now allocated only when they are just to be inserted to the table. Updating a route needs a locally allocated route structure. Ownership of the attributes is also now not transfered from protocols to tables and vice versa but just borrowed which should be easier to handle in a multithreaded environment.
2021-11-09Limit containmentMaria Matejka
2021-11-09Protocol stats split to import and exportMaria Matejka
2021-11-09Refeed is done from export table when appropriateMaria Matejka
2021-11-09Suppressed MRT unused static function warningMaria Matejka
2021-11-09RPKI: Do nothing when protocol is stoppingMaria Matejka
2021-11-09RPKI shouldn't process more packets when being stoppedMaria Matejka
2021-11-09Kernel routes are flushed on shutdown by kernel scan, not by table scanMaria Matejka
2021-11-09Extended route trace: logging Path IdentifiersMaria Matejka
2021-10-20Conf: Fix crash during shutdownOndrej Zajicek (work)
BIRD implements shutdown by reconfiguring to fake empty configuration. Such fake config structure is created from the last running config and shares some data, including symbol table. This allows access to (removed) routing tables and causes crash when 'show route' command is used during shutdown. Clean up symbol table, table list and links to default tables, so removed routing tables cannot be accessed during shutdown.
2021-10-13Dropping the unused rte_same hookMaria Matejka
2021-10-13Dropping rte-local dumper entriesMaria Matejka
2021-10-13Kernel: Convert the rte-local attributes to extended attributes and flags to ↵Maria Matejka
pflags
2021-10-13Route: moved rte_src pointer from rta to rteMaria Matejka
It is an auxiliary key in the routing table, not a route attribute.
2021-10-13Preexport: No route modification, no linpool neededMaria Matejka
2021-10-13RIP fixup + dropping the tmp_attrs mechanism as obsoleteMaria Matejka
2021-10-13Dropping the RTS_DUMMY temporary route storage.Maria Matejka
Kernel route sync is done by other ways now and this code is not used currently.
2021-10-13Preference moved to RTA and set explicitly in protocolsMaria Matejka
2021-10-13Export table: Delay freeing of old stored route.Maria Matejka
This is needed to provide the protocols the full old route after filters when export table is enabled.
2021-10-13BGP: Moved the suppressed and stale flags to pflagsMaria Matejka
2021-10-13Babel: Convert the rte-local attributes to extended attributesMaria Matejka
2021-10-13There may be a symbol with NULL protocol when reconfiguringMaria Matejka
2021-10-13OSPF: Convert the rte-local attributes to extended attributesMaria Matejka
2021-10-13Show route may be accidentally called on shutdown also when not all default ↵Maria Matejka
tables are present
2021-10-13RIP: convert the rte-local attributes to extended attributesMaria Matejka
2021-10-13Extended route attributes may include also pointersMaria Matejka
2021-10-13IGP metric getter refactoring to protocol callbackMaria Matejka
Direct protocol hooks for IGP metric inside nest/rt-table.c make the protocol API unnecessarily complex. Instead, we use a proper callback.
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