summaryrefslogtreecommitdiff
path: root/proto/bgp/bgp.c
AgeCommit message (Collapse)Author
2024-02-18BGP: Update SendHoldTimer BGP Error codeJob Snijders
IANA registered an "Early Allocation" BGP Error code for 'Send Hold Timer Expired' event. Update BIRD to use that error code.
2024-02-07BGP: Allow multiple EBGP neighbors with the same peer.Alexander Zubkov
We can distinguish BGP sessions if at least one side uses a different IP address. Extend olock mechanism to handle local IP as a part of key, with optional wildcard, so BGP sessions could local IP in the olock and not block themselves.
2024-01-22Trivial code cleanupsOndrej Zajicek
2023-12-05BGP: Send hold timerKaterina Kubecova
Implement BGP Send hold timer according to draft-ietf-idr-bgp-sendholdtimer. The Send hold timer drops the session if the neighbor is sending keepalives, but does not receive our messages, causing the TCP connection to stall.
2023-11-23BGP: Add options to require BGP capabilitiesOndrej Zajicek
Some BGP capabilities change the BGP behavior in a significant way, so if the configuration depends on it, it is better to not establish BGP session when the capability is not available. Add several BGP option to require individual BGP capabilities during session negotiation.
2023-11-23BGP: Simplify capability handlingOndrej 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.
2023-10-04BGP: 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.
2023-09-12Conf: Symbol manipulation gets its context explicitlyMaria Matejka
2023-08-22Merge branch 'bmp'Ondrej Zajicek
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.
2023-08-18BMP: 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
2023-06-08BMP: 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!
2023-05-01BMP: Use OPEN messages stored in BGPOndrej Zajicek
The BMP protocol needs OPEN messages of established BGP sessions to construct appropriate Peer Up messages. Instead of saving them internally we use OPEN messages stored in BGP instances. This allows BMP instances to be restarted or enabled later. Because of this change, we can simplify BMP data structures. No need to keep track of BGP sessions when we are not started. We have to iterate over all (established) BGP sessions when the BMP session is established. This is just a scaffolding now, but some kind of iteration would be necessary anyway. Also, the commit cleans up handling of msg/msg_length arguments to be body/body_length consistently in both rx/tx and peer_up/peer_down calls.
2023-05-01BGP: Save sent and received OPEN messagesOndrej Zajicek
These are necessary for BMP Peer UP message and it is better to keep them in BGP than in BMP (so BMP could be restarted or added later).
2023-04-18BMP: Allow build without BMP and disable BMP build by defaultOndrej Zajicek
It has still several important issues to be enabled by default.
2023-04-16BMP: Minor cleanupsOndrej Zajicek (work)
Remove redundant 'disable' option, simplify IP address serialization, and remove useless macros.
2023-04-16BMP protocol supportPawel Maslanka
Initial implementation of a basic subset of the BMP (BGP Monitoring Protocol, RFC 7854) from Akamai team. Submitted for further review and improvement.
2023-03-16BGP: Free bind applies also to outbound connectionsMaria Matejka
Even though the free bind option is primarily meant to alleviate problems with addresses assigned too late, it's also possible to use BIRD with AnyIP configuration, assigning whole ranges to the machine. Therefore free bind allows also to create an outbound connection from specific address even though such address is not assigned.
2023-02-19BGP: Update RFC referencesOndrej Zajicek
2023-01-20BGP: Add received role value to role mismatch log messageOndrej Zajicek
2022-12-09BGP: Improve handling of hold and keepalive timersOndrej Zajicek
The effective keepalive time now scales relative to the negotiated hold time, to maintain proportion between the keepalive time and the hold time. This avoids issues when both keepalive and hold times were configured, the hold time was negotiated to a smaller value, but the keepalive time stayed the same. Add new options 'min hold time' and 'min keepalive time', which reject session attempts with too small hold time. Improve validation of config options an their documentation. Thanks to Alexander Zubkov and Sergei Goriunov for suggestions.
2022-10-10BGP: Add option 'next hop prefer global'Ondrej Zajicek
Add BGP channel option 'next hop prefer global' that modifies BGP recursive next hop resolution to use global next hop IPv6 address instead of link-local next hop IPv6 address for immediate next hop of received routes.
2022-10-03BGP: Do not assume that all channels are struct bgp_channelOndrej Zajicek
In principle, the channel list is a list of parent struct proto and can contain general structures of type struct channel, That is useful e.g. for adding MPLS channels to BGP.
2022-07-24Merge branch 'master' into backportOndrej Zajicek
2022-07-12BGP: Minor improvements to BGP rolesOndrej Zajicek
Add support for bgp_otc in filters and warning for configuration inside confederations.
2022-07-11BGP: Implement BGP rolesEugene Bogomazov
Implement BGP roles as described in RFC 9234. It is a mechanism for route leak prevention and automatic route filtering based on common BGP topology relationships. It defines role capability (controlled by 'local role' option) and OTC route attribute, which is used for automatic route filtering and leak detection. Minor changes done by commiter.
2022-05-30Merge remote-tracking branch 'origin/master' into haugesund-to-2.0Maria Matejka
2022-05-21BGP: Display neighbor port on show protocolOndrej Zajicek
2022-04-06Protocols have their own explicit init routinesMaria Matejka
2022-03-09Merge commit 'e42eedb9' into haugesundMaria Matejka
2022-03-02Replacing BGP temporary linpools by the common temporary linpoolMaria Matejka
2022-02-06Merge branch 'oz-trie-table'Ondrej Zajicek (work)
2022-02-06BGP: Implement flowspec validation procedureOndrej Zajicek (work)
Implement flowspec validation procedure as described in RFC 8955 sec. 6 and RFC 9117. The Validation procedure enforces that only routers in the forwarding path for a network can originate flowspec rules for that network. The patch adds new mechanism for tracking inter-table dependencies, which is necessary as the flowspec validation depends on IP routes, and flowspec rules must be revalidated when best IP routes change. The validation procedure is disabled by default and requires that relevant IP table uses trie, as it uses interval queries for subnets.
2022-01-09BGP: Add option 'free bind'Ondrej Zajicek (work)
The BGP 'free bind' option applies the IP_FREEBIND/IPV6_FREEBIND socket option for the BGP listening socket. Thanks to Alexander Zubkov for the idea.
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.
2021-06-01BGP: Ensure that freed neighbor entry is not accessedOndrej Zajicek (work)
Routes from downed protocols stay in rtable (until next rtable prune cycle ends) and may be even exported to another protocol. In BGP case, source BGP protocol is examined, although dynamic parts (including neighbor entries) are already freed. That may lead to crash under some race conditions. Ensure that freed neighbor entry is not accessed to avoid this issue.
2021-03-18BGP: Do not show statisticsOndrej Zajicek (work)
BGP statistics code was preliminary and i wanted to replace it by separate 'show X stats' command. The patch hides the preliminary output in 'show protocols all' so it is not part of the released version.
2021-02-10BGP: Add support for BGP hostname capabilityVincent Bernat
This is an implementation of draft-walton-bgp-hostname-capability-02. It is implemented since quite some time for FRR and in datacenter, this gives a nice output to avoid using IP addresses. It is disabled by default. The hostname is retrieved from uname(2) and can be overriden with "hostname" option. The domain name is never set nor displayed. Minor changes by committer.
2021-01-06BGP: Deprecate 'missing lladdr' optionOndrej Zajicek (work)
The option is not implemented since transition to 2.0 and no plan to add it. Also remove some deprecated RTS_* valus from documentation. Thanks to Sébastien Parisot for notification.
2020-11-08BFD: Allow per-request session optionsOndrej Zajicek (work)
BFD session options are configured per interface in BFD protocol. This patch allows to specify them also per-request in protocols requesting sessions (currently limited to BGP).
2020-02-27BGP: Support for MD5SIG together with remote rangeOndrej Zajicek (work)
When dynamic BGP with remote range is configured, MD5SIG needs to use newer socket option (TCP_MD5SIG_EXT) to specify remote addres range for listening socket. Thanks to Adam Kułagowski for the suggestion.
2019-12-03BGP: Add some statisticsOndrej Zajicek (work)
Add some statistic counters to BGP consistent with BGP MIB (RFC 4273), including persistent 'FSM established transitions'.
2019-11-10BGP: Add option to enforce first AS in AS_PATHOndrej Zajicek (work)
This is optional check described in RFC 4271. Although this can be also done by filters, it is widely implemented option in BGP implementations. Thanks to Eugene Bogomazov for the original patch.
2019-10-26BGP: RFC 8654 got releasedOndrej Zajicek (work)
2019-10-10BGP: Fix reconfiguration with import tableOndrej Zajicek (work)
Change of some options requires route refresh, but when import table is active, channel reload is done from it instead of doing full route refresh. So in this case we request it internally.
2019-10-09BGP: AIGP metric support (RFC 7311)Ondrej Zajicek (work)
2019-09-17BGP: Fix setup with multiple dynamic BGP rangesOndrej Zajicek (work)
Based on a patch from Liam Nattrass, thanks.
2019-08-20BGP: Implement extended optional parameters lengthOndrej Zajicek (work)
Extends BGP options/capabilities data length to 16bit, to avoid issues with too many capabilities. See draft-ietf-idr-ext-opt-param-07
generated by cgit v1.2.3 (git 2.39.1) at 2024-12-04 07:56:08 +0000