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2023-11-23BGP: Tunnel Encapsulation attributeMikael Magnusson
Refer to RFC 9012, The BGP Tunnel Encapsulation Attribute.
2023-11-09OSPF: On physical PtP links, skip next-hop resolvingSoha Jin
Signed-off-by: Soha Jin <soha@jin.sh> Co-developed-by: Wende Tan <twd2.me@gmail.com>
2023-10-05BGP: Improve custom BGP attributesOndrej Zajicek
- Implement EA_GET for custom BGP attributes - Forbid EA_SET on existing opaque attributes - Forbid redefining existing attributes - Document possible compatibility problems
2023-10-05MPLS: Handle compatibility with old configsOndrej Zajicek
Old configs do not define MPLS domains and may use a static protocol to define static MPLS routes. When MPLS channel is the only channel of static protocol, handle it as a main channel. Also, define implicit MPLS domain if needed and none is defined.
2023-10-04BGP: Custom attribute definitions should use cfg_alloc(), not malloc()Ondrej Zajicek
Otherwise we would get memory leaks.
2023-10-04MPLS: Update to support and use 64bit source idOndrej Zajicek
2023-10-04L3VPN: Import/export target reconfigurationOndrej Zajicek
2023-10-04BGP, L3VPN: Fix MPLS channel reloadOndrej Zajicek
When a MPLS channel is reloaded, it should reload all regular MPLS-aware channels. This causes re-evaluation of routes in FEC map and possibly reannouncement of MPLS routes.
2023-10-04L3VPN: Fix bug in reconfigurationOndrej Zajicek
Fields import_target / export_target link to config structures, must be updated during reconfiguration.
2023-10-04Static: Add syntax for static MPLS labelsOndrej Zajicek
Instead of just using route attributes, static routes with static MPLS labels can be defined just by e.g.: route 10.1.1.0/24 mpls 100 via 10.1.2.1 mpls 200;
2023-10-04L3VPN: BGP/MPLS VPNs using MPLS backboneOndrej Zajicek
The L3VPN protocol implements RFC 4364 BGP/MPLS VPNs using MPLS backbone. It works similarly to pipe. It connects IP table (one per VRF) with (global) VPN table. Routes passed from VPN table to IP table are stripped of RD and filtered by import targets, routes passed in the other direction are extended with RD, MPLS labels and export targets in extended communities. A separate MPLS channel is used to announce MPLS routes for the labels.
2023-10-04BGP: Add MPLS supportOndrej Zajicek
When MPLS is active, received routes on MPLS-aware SAFIs (ipvX-mpls, vpnX-mpls) are automatically labeled according to active label policy and corresponding MPLS routes are automatically generated. Also routes sent on MPLS-aware SAFIs announce local labels when it should be done.
2023-10-04Static: Add MPLS supportOndrej Zajicek
When MPLS is active, static IP/VPN routes are automatically labeled according to active label policy and corresponding MPLS routes are automatically generated.
2023-10-02Nest: Expand rte_src.private_id to u64Ondrej Zajicek
In general, private_id is sparse and protocols may want to map some internal values directly into it. For example, L3VPN needs to map VPN route discriminators to private_id. OTOH, u32 is enough for global_id, as these identifiers are dense.
2023-09-27BGP config: Splitting Route Refresh and Enhanced Route RefreshMaria Matejka
Both toggles are on by default but if some implementation needs one or another to be switched off separately, then it's possible now.
2023-09-26Aggregator: Forbidden dangerous filter computationsMaria Matejka
2023-09-26Aggregator: Fixed hashing of adataMaria Matejka
2023-09-26Basic route aggregationIgor Putovny
Add a new protocol offering route aggregation. User can specify list of route attributes in the configuration file and run route aggregation on the export side of the pipe protocol. Routes are sorted and for every group of equivalent routes new route is created and exported to the routing table. It is also possible to specify filter which will run for every route before aggregation. Furthermore, it will be possible to set attributes of new routes according to attributes of the aggregated routes. This is a work in progress. Original work by Igor Putovny, subsequent cleanups and finalization by Maria Matejka.
2023-09-20BGP: Setting and unsetting unknown attributeskaterina.kubecova
All these must be declared as bytestring. Allows operators to delete unwanted attributes breaking the Internet: https://blog.benjojo.co.uk/post/bgp-path-attributes-grave-error-handling
2023-09-20Structures bytestring and adata merged into adata.katerina.kubecova
2023-09-12Conf: config warnings show the file positionMaria Matejka
2023-09-12Conf: Symbol manipulation gets its context explicitlyMaria Matejka
2023-08-29BFD: Improve handling of AdminDownOndrej Zajicek
According to RFC 5882, system should not interpret the local or remote session state transition to AdminDown as failure. We followed that for the local session state but not for the remote session state (which just triggered a transition of the local state to Down). The patch fixes that. We do not properly generate AdminDown on our side, so the patch is relevant just for interoperability with other systems. Thanks to Sunnat Samadov for the bugreport.
2023-08-25Conf: Allow keywords to be redefined by user symbolsOndrej Zajicek
Most syntactic constructs in BIRD configuration (e.g. protocol options) are defined as keywords, which are distinct from symbols (user-defined names for protocols, variables, ...). That may cause backwards compatibility issue when a new feature is added, as it may collide with existing user names. We can allow keywords to be shadowed by symbols in almost all cases to avoid this issue. This replaces the previous mechanism, where shadowable symbols have to be explictly added to kw_syms.
2023-08-25RPKI: Fix conflict in config grammarOndrej Zajicek
2023-08-24Conf: Use nonterminal bytestring instead of BYTETEXTOndrej Zajicek
Nonterminal bytestring allows to provide expressions to be evaluated in places where BYTETEXT is used now: passwords, radv custom option. Based on the patch from Alexander Zubkov <green@qrator.net>, thanks!
2023-08-24Filter: Add bytestring typeAlexander Zubkov
- Rename BYTESTRING lexem to BYTETEXT, not to collide with 'bytestring' type name - Add bytestring type with id T_BYTESTRING (0x2c) - Add from_hex() filter function to create bytestring from hex string - Add filter test cases for bytestring type Minor changes by committer.
2023-08-23Nest: Treat VRF interfaces as inside respective VRFsOndrej Zajicek
Despite not having defined 'master interface', VRF interfaces should be treated as being inside respective VRFs. They behave as a loopback for respective VRFs. Treating the VRF interface as inside the VRF allows e.g. OSPF to pick up IP addresses defined on the VRF interface. For this, we also need to tell apart VRF interfaces and regular interfaces. Extend Netlink code to parse interface type and mark VRF interfaces with IF_VRF flag. Based on the patch from Erin Shepherd, thanks!
2023-08-22Merge branch 'bmp'Ondrej Zajicek
2023-08-22Use more proper pointers to constant bytestringsAlexander Zubkov
2023-08-22BGP: Update RFC referenceOndrej Zajicek
RFC 5549 was obsoleted by RFC 8950.
2023-08-22BMP: Improve peer_down handlingOndrej Zajicek
Move all bmp_peer_down() calls to one place and make it synchronous with BGP session down, ensuring that BMP receives peer_down before route withdraws from flushing. Also refactor bmp_peer_down_() message generating code.
2023-08-21BMP: Use generic channel feed instead of direct walk over rtableOndrej Zajicek
Now we use rt_notify() and channels for both feed and notifications, in both import tables (pre-policy) and regular tables (post-policy). Remove direct walk in bmp_route_monitor_snapshot().
2023-08-18BMP: Fix route timestampsOndrej Zajicek
2023-08-18BMP: Refactor route monitoringOndrej Zajicek
- Manage BMP state through bmp_peer, bmp_stream, bmp_table structures - Use channels and rt_notify() hook for route announcements - Add support for post-policy monitoring - Send End-of-RIB even when there is no routes - Remove rte_update_in_notify() hook from import tables - Update import tables to support channels - Add bmp_hack (no feed / no flush) flag to channels
2023-08-01BMP: Remove useless bufferOndrej Zajicek
2023-08-01BMP: Simplify route monitoring hooksOndrej Zajicek
No need for *_begin(), *_commit(), and *_end() hooks. The hook *_notify() is sufficient for everything.
2023-06-26RAdv: Use new syntax for custom optionsAlexander Zubkov
And use WALK_LIST macro
2023-06-23RAdv: Add custom optionsAlexander Zubkov
Currently one can use only a predefined set of advertised options in RAdv protocol, which are supported by BIRD configuration. It would be convenient to be able to specify other possible options at least manually as a blob so one should not wait until it is supported in the code, released, etc. This idea is inspired by presentation by Ondřej Caletka at CSNOG, in which he noticed the lack of either PREF64 option or possibility to add custom options in various software. The patch makes it possible to define such options with the syntax: other type <num> <bytestring>
2023-06-08BMP: Ensure that bmp_fire_tx() does nothing when not upOndrej Zajicek
2023-06-08BMP: Support multiple instances of BMP protocolOndrej Zajicek
Add internal BMP functions with plicit bmp_proto *p as first argument, which allows using TRACE() macro. Keep list of BMP instances and call internal functions. Old BMP functions are wrappers that call internal functions for all enabled BMP instances. Extract End-of-RIB mark into separate function. Based on patch from Michal Zagorski <mzagorsk@akamai.com>. Thanks!
2023-06-02Babel: Minor changes to RTT formattingOndrej Zajicek
Use existing %t printf code and move 'ms' in CLI output to table header.
2023-06-02Babel: Add support for the RTT extensionToke Høiland-Jørgensen
This adds support to the Babel protocol for the RTT extension specified in draft-ietf-babel-rtt-extension. While this extension is not yet at the RFC stage, it is one of the more useful extensions to Babel[0], so it seems worth having in Bird as well. The extension adds timestamps to Hello and IHU TLVs and uses these to compute an RTT to each neighbour. An extra per-neighbour cost is then computed from the RTT based on a minimum and maximum interval and cost value specified in the configuration. The primary use case for this is improving routing in a geographically distributed tunnel-based overlay network. The implementation follows the babeld implementation when picking constants and default configuration values. It also uses the same RTT smoothing algorithm as babeld, and follows it in adding a new 'tunnel' interface type which enables RTT by default. [0] https://alioth-lists.debian.net/pipermail/babel-users/2022-April/003932.html
2023-05-31BMP: Fix bug in buffer resizeOndrej Zajicek
The buffer code in bmp_buffer_grow(), reuse the MRT buffer handling code. Based on comments by Michal Zagorski <mzagorsk@akamai.com>, Thanks!
2023-05-31BMP: Proper reconfiguration and protocol statusOndrej Zajicek
Based on patches from Michal Zagorski <mzagorsk@akamai.com> co-authored with Pawel Maslanka <pmaslank@akamai.com>. Thanks!
2023-05-30BMP: Add station address checkOndrej Zajicek
Also, do not initialize it to IPA_NONE4, use regular IPA_NONE.
2023-05-30BMP: Add local address optionMichal Zagorski
Also remove unused local and ip_post_policy options. Co-authored with Pawel Maslanka <pmaslank@akamai.com>. Minor changes by committer.
2023-05-30BMP: Minor formatting cleanupsOndrej Zajicek
Based on patches from Michal Zagorski <mzagorsk@akamai.com> co-authored with Pawel Maslanka <pmaslank@akamai.com>. Thanks!
2023-05-30BGP: Improve bgp_create_update_bmp()Ondrej Zajicek
Fix issue with missing AF cap (e.g. IPv4 unicast when no capabilities are announced). Add Linpool save/restore action similar to bgp_create_update(). Based on patch from Michal Zagorski <mzagorsk@akamai.com> co-authored with Pawel Maslanka <pmaslank@akamai.com>. Thanks!
2023-05-19BGP: Fix role check when no capability option is presentOndrej Zajicek
When an OPEN message without capability options was parsed, the remote role field was not initialized with the proper (non-zero) default value, so it was interpreted as if 'provider' was announced. Thanks to Mikhail Grishin for the bugreport.
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