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2019-07-10OSPF: Fix handling of NSSA option flagsOndrej Zajicek (work)
Per RFC 3101, N-bit signalling NSSA support should be used only in Hello packets, not in DBDES packets. BIRD since 2.0.4 verifies N-bit in neighbor structure, which is learned from DBDES packets, therefore NSSA-LSAs are not propagated to proper implementations of RFC 3101. This patch fixes that. Both removing the check and removing N-bit from DBDES packet. This will fix compatibility issues with proper implementations, but causes compatibility issues with BIRD 2.0.4.
2019-07-10Merge branch 'master' into mq-filter-stackMaria Matejka
2019-07-09OSPF: Minor fix in graceful restartOndrej Zajicek (work)
Most LSA origination is blocked in ospf_update_topology(), this fix blocks LSA origination from ospf_rt_spf().
2019-07-09OSPF: Update DR when local priority changesOndrej Zajicek (work)
When priority is reconfigured locally, we need to trigger DR election. (recommiting, was reset by the previous commit)
2019-07-09OSPF: Fix handling of external routes on graceful restartOndrej Zajicek (work)
We need to flush learned external LSAs a bit later than other LSAs (after first feed after end of the graceful restart) to avoid flap of external routes.
2019-07-04OSPF: Update DR when local priority changesOndrej Zajicek (work)
When priority is reconfigured locally, we need to trigger DR election.
2019-07-03Merge branch 'master' into mq-filter-stackMaria Matejka
2019-07-03Dynamic attributes definition split whether it is bitmask or not.Maria Matejka
2019-07-01BGP: Prefix hash is too small, increase its max size.Maria Jan Matejka
This doesn't make any change for you until you have millions of updates waiting to be sent. Increasing the max hash size from 2^20 to 2^24.
2019-07-01BGP: split tx explicitlyMaria Jan Matejka
If BGP has too many data to send and BIRD is slower than the link, TX is always possible until all data is sent. This patch limits maximum number of generated BGP messages in one iteration of TX hook.
2019-06-30OSPF: Support for graceful restartOndrej Zajicek (work)
Implement OSPFv2 (RFC 3623) and OSPFv3 (RFC 5187) graceful restart, for both restarting and helper sides. Graceful restart is initiated by 'graceful down' command.
2019-06-30Nest: Add command to request graceful restartOndrej Zajicek (work)
When 'graceful down' command is entered, protocols are shut down with regard to graceful restart. Namely Kernel protocol does not remove routes and BGP protocol does not send notification, just closes the connection.
2019-06-12BGP: Fix bug introduced in one of last patchesOndrej Zajicek (work)
2019-05-22Filter: Some people can't pronounce "postfixify" correctly. Let's try ↵Jan Maria Matejka
"linearize" instead. This is just a naming change.
2019-05-17Lexer now returns known sym / unknown sym / keywordMaria Matejka
2019-04-30BGP: Compliance with RFC8203bisAlexander Azimov
2019-04-30BGP: Output Local AS number in show protocolOndrej Zajicek (work)
Useful for implementation of agents implementing the SNMP-BGP MIB, which requires the local AS of a session to be specified. Thanks to Jan-Philipp Litza for the patch.
2019-04-30BGP: Dynamic BGPOndrej Zajicek (work)
Support for dynamically spawning BGP protocols for incoming connections. Use 'neighbor range' to specify range of valid neighbor addresses, then incoming connections from these addresses spawn new BGP instances.
2019-04-12OSPFv3: Fix some overlooked cases in IPv4 modeOndrej Zajicek (work)
Prefixes with max length (/32) were not handled properly. Thanks to bauen1 for the bugreport.
2019-04-08BGP: Handle corner cases in event orderingOndrej Zajicek (work)
When BGP connection is opened, it may happen that rx hook (with remote OPEN) is called before tx hook (for local OPEN). Therefore, we need to do internal changes (like setting local_caps) synchronously with OPENSENT transition and we need to ensure that OPEN is sent before KEEPALIVE.
2019-04-03BGP: Promiscuous ASN modeOndrej Zajicek (work)
Allow to specify just 'internal' or 'external' for remote neighbor instead of specific ASN. In the second case that means BGP peers with any non-local ASNs are accepted.
2019-04-02BGP: Separate runtime and config usage of local/remote ip and as fieldsOndrej Zajicek (work)
2019-03-19BGP: Mandatory option for channelsOndrej Zajicek (work)
Allow to mark channel to be mandatory, and do not allow BGP sessions if no common AFI/SAFI is established.
2019-03-18BGP: Handle case where capabilites are not usedOndrej Zajicek (work)
If peer does not announce capabilities at all, or when we have capabilities disabled, handle that as implicit IPv4 unicast.
2019-03-18Merge branch 'master' into HEADMaria Matejka
2019-03-15Perf: fixed stupid allocation bugMaria Matejka
2019-03-14Nest: Update handling of temporary attributesOndrej Zajicek (work)
The temporary atttributes are no longer removed by ea_do_prune(), but they are undefined by store_tmp_attrs() protocol hooks. This fixes several bugs where temporary attributes were removed when they should not or not removed when they should be. The flag EAF_TEMP is no longer needed and was removed. Update all protocol make_tmp_attrs() / store_tmp_attrs() hooks to use helper functions and to handle unset attributes properly. Also fix some related bugs like improper handling of empty eattr list.
2019-03-06OSPF: Improved handling of tmpattrsOndrej Zajicek (work)
Keep track of whether OSPF tmpattrs are actually defined for given route (using flags in rte->pflags). That makes them behave more like real eattrs so a protocol can define just a subset of them or they can be undefined by filters. Do not set ospf_metric2 for other than type 2 external OSPF routes and do not set ospf_tag for non-external OSPF routes. That also fixes a bug where internal/inter-area route propagated from one OSPF instance to another is initiated with infinity ospf_metric2. Thanks to Yaroslav Dronskii for the bugreport.
2019-02-20Conf: Symbol implementation converted from void pointers to unionMaria Matejka
... and consted some declarations.
2019-02-20Filter: merged filter instruction constructors, counting line size on ↵Maria Matejka
instruction construct
2019-02-20Filter + Config: Fix bugs, tests and split symbols by typeMaria Matejka
2019-02-20Filter: refactoring of instruction constructorsMaria Matejka
2019-02-20Filter refactoring: dropped the recursion from the interpreterMaria Matejka
This is a major change of how the filters are interpreted. If everything works how it should, it should not affect you unless you are hacking the filters themselves. Anyway, this change should make a huge improvement in the filter performance as previous benchmarks showed that our major problem lies in the recursion itself. There are also some changes in nest and protocols, related mostly to spreading const declarations throughout the whole BIRD and also to refactored dynamic attribute definitions. The need of these came up during the whole work and it is too difficult to split out these not-so-related changes.
2019-02-17OSPF: Reset LSAs during area type changeOndrej Zajicek (work)
When area is reconfigured to a different type, we need to flush LSAs as they may not be valid (e.g. NSSA-LSA for non-NSSA area). Also, when we have have just one OSPF area and that changes type, we could restart OSPF as there is no state to keep anyway. That solves issue with different handling of external routes exported to OSPF based of main area type.
2019-02-13OSPF: Basic support for DN-bit handling (RFC 4576)Ondrej Zajicek (work)
External LSAs originated by OSPF routers with VPN-PE behavior enabled are marked by DN flag and they are ignored by other OSPF routers with VPN-PE enabled.
2019-02-09OSPF: Do not originate Router-Information LSAOndrej Zajicek (work)
As we do not have much usage for it yet.
2019-02-09Merge remote-tracking branch 'origin/mq-opt'Ondrej Zajicek (work)
2019-02-03OSPF: Send direct acknowledgements as unicastOndrej Zajicek (work)
Direct acknowledgements should be send as unicast to a corresponding neighbor. Only delayed acks should be send as multicast to all/designated routers.
2019-02-03OSPF: Reject duplicate DBDES packets after dead intervalOndrej Zajicek (work)
Master may free last DBDES packet immediately. Slave must wait dead interval before freeing last DBDES packet and then reject duplicate DBDES packets with SeqNumberMismatch.
2019-02-03OSPF: DD seqnum should be initialized only for first attemptsOndrej Zajicek (work)
After SeqNumberMismatch/BadLSReq, we should continue with the old seqnum++. The old code tries to do that by n->adj, but it was set nowhere.
2019-02-03OSPF: Reject DBDES packets with non-matching MTUOndrej Zajicek (work)
As it is specified in RFC 2328. The old code just provided warning.
2019-02-01Perf: Added forgotten all-protocol optionsMaria Matejka
2019-01-31Perf: Prune the table after every loop to have clean state.Maria Matejka
2019-01-31Perf: Write also BIRD version to have all the needed data in the logfileMaria Matejka
2019-01-26Doc: Remove doc for already removed optionOndrej Zajicek (work)
2019-01-26BGP: Cleanup channels when going downOndrej Zajicek (work)
When going up, uncleaned old channel state may trigger unexpected conditions crashing bird.
2019-01-24OSPF: Opaque LSAs and Router Information LSAOndrej Zajicek (work)
Add support for OSPFv2 Opaque LSAs (RFC 5250) and for Router Information LSA (RFC 7770). The second part is here mainly for testing opaque LSAs.
2019-01-02BGP: Better dispatch of incoming connectionsOndrej Zajicek (work)
Since v2 we have multiple listening BGP sockets, and each BGP protocol has associated one of them. Use listening socket that accepted the incoming connection as a key in the dispatch process so only BGP protocols assocaited with that listening socket can be selected. This is necesary for proper dispatch when VRFs are used.
2019-01-02BGP: Postpone setting link_addrOndrej Zajicek (work)
It may happen that the LLv6 address for given iface is not defined during BGP start, so we postpone the check to the the session establishment.
2018-12-18Perf: Protocol to measure BIRD performance internallyMaria Matějka
This protocol is highly experimental and nobody should use it in production. Anyway it may help you getting some insight into what eats so much time in filter processing.