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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.
2019-07-10Debug: growing message format bufferMaria Matejka
This led in corner cases to undefined buffer content and garbage output.
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().
2019-07-09Doc: Fix typo in BGP dynamic names feature descriptionVincent Bernat
2019-07-09Merge branch 'master' of gitlab.labs.nic.cz:labs/birdMaria Matejka
2019-07-09Test: Fixed annoying warnings (and possible obscure bugs).Maria Matejka
2019-07-09Test: better random u64 generatorMaria Matejka
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.
2019-07-08Nest: Uninitialized variable fixMaria Matejka
Thanks to Vincent Bernat for reporting this.
2019-07-08Libdmalloc macros fixedMaria Matejka
2019-07-04OSPF: Update DR when local priority changesOndrej Zajicek (work)
When priority is reconfigured locally, we need to trigger DR election.
2019-07-02Netlink: Handle alien routes with unsorted nexthopsOndrej Zajicek (work)
Nest requires that nexthops are sorted, the kernel protocol have to ensure that for alien routes.
2019-07-02Netlink: Do unified scan for both IPv4 and IPv6Ondrej Zajicek (work)
Instead of separate scans for IPv4, IPv6 and MPLS, do one AF_UNSPEC scan. This also avoids kernel issue when kernel reported IPv4 and IPv6 routes during MPLS scan if MPLS is not active.
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.
2019-06-30Add mock-up function for unit testsOndrej Zajicek (work)
They failed without it.
2019-06-30Doc: OSPF graceful restart optionsOndrej Zajicek (work)
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.
2019-06-12Add mock-up function for unit testsOndrej Zajicek (work)
They failed without it.
2019-06-12Add CLI command to test reconfiguration statusOndrej Zajicek (work)
Based on patch from Kenth Eriksson <kenth.eriksson@infinera.com>.
2019-06-12BIRD coding conventionsKenth Eriksson
Added Emacs config file describing BIRD coding conventions, as suggested by Kenth Eriksson based on existing practice.
2019-06-12BGP: Fix bug introduced in one of last patchesOndrej Zajicek (work)
2019-04-30Doc: Dynamic BGPOndrej Zajicek (work)
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.
2019-04-24Small type in doc.Ondrej Filip
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)
2019-03-19Doc: Route attribute cleanupsOndrej 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.
2019-03-18Build: Automatic dependency tracking for generated filesMaria 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.
2019-02-26NEWS and version updatev2.0.4Ondrej Zajicek (work)
2019-02-22Conf: Switch for faster (and slightly bigger) lexerMaria Matejka
2019-02-22Nest: Do not compare rte.flags during rte_update()Ondrej Zajicek (work)
Route flags are mosty internal state of rtable, they are not significant to whether a route has changed. With the old code, all routes received as a part of enhanced route refresh are always re-announced to other peers due to change in REF_STALE.
2019-02-19HTML are no longer generated in srcdirOndrej Zajicek (work)
2019-02-19Doc: Detect SP/OpenSP automaticallyOndrej Zajicek (work)
2019-02-19Nest: Prevent withdraws from propagation back to source protocol (for ↵Ondrej Zajicek (work)
accepted mode) Update for one of previous patches, handles the the issue for first-accepted mode of route propagation.
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)
2019-02-05Nest: Improve export counter handlingOndrej Zajicek (work)
One of previous workarounds for phantom route avoidance breaks export counters by expanding sending of spurious withdraws, which are send when we are not sure whether we have advertised that routes in the past. If not, then export counter is decreased, but it was not increased before, so it overflows under zero. The patch fixes that by sendung spurious withdraws, but not counting them on export counter. That may lead to error in the other direction, but that happens only as a race condition (i.e., in normal operation filters return proper values about old route export state).
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