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2021-03-15Doc: Document channel debug optionsOndrej Zajicek (work)
2021-03-12Rate-limit scheduling of work-eventsOndrej Zajicek (work)
In general, events are code handling some some condition, which is scheduled when such condition happened and executed independently from I/O loop. Work-events are a subgroup of events that are scheduled repeatedly until some (often significant) work is done (e.g. feeding routes to protocol). All scheduled events are executed during each I/O loop iteration. Separate work-events from regular events to a separate queue and rate limit their execution to a fixed number per I/O loop iteration. That should prevent excess latency when many work-events are scheduled at one time (e.g. simultaneous reload of many BGP sessions).
2021-03-10Static: Implement reload hookOndrej Zajicek (work)
2021-03-09Nest: No automatic ROA reload on non-reloadable channelsOndrej Zajicek (work)
2021-02-12Nest: Add option to control automatic RPKI reloadOndrej Zajicek (work)
Also, no automatic reload for BGP channels without import/export table.
2021-02-10Tests: Add missing mockup function to testsOndrej Zajicek (work)
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.
2021-02-10Nest: Automatic channel reloads based on RPKI changesOndrej Zajicek (work)
If there are roa_check() calls in channel filters, then the channel subscribes to ROA table notifications, which are sent when ROA tables are updated (subject to settle time) and trigger channel reload or refeed.
2021-02-07Filter: Recursive filter iteration codeOndrej Zajicek (work)
Add macros for recursive filter iteration that allows to examine all instructions reachable from a filter.
2021-01-22MRT: Fix MP-BGP next hopsOndrej Zajicek (work)
Flag signalling that MP-BGP mode should be used got reset after first batch of routes, so remaining routes were processed without that, leading to missing MP_REACH_NLRI attribute. Thanks to Piotr Wydrych for the bugreport.
2021-01-14Netlink: Ignore dead routesOndrej Zajicek (work)
With net.ipv4.conf.XXX.ignore_routes_with_linkdown sysctl, a user can ensure the kernel does not use a route whose target interface is down. Such route is marked with a 'dead' / RTNH_F_DEAD flag. Ignore these routes or multipath nexthops during scan. Thanks to Vincent Bernat for the original patch.
2021-01-12Build: Fix tags generationOndrej Zajicek (work)
2021-01-12MRT: Fix IPv6 table dumpsOndrej Zajicek (work)
Add fake MP_REACH_NLRI attribute with BGP next hop when encoding MRT table dumps for IPv6 routes. That is necessary to encode next hop as NEXT_HOP attribute is not used for MP-BGP. Thanks to Santiago Aggio for the bugreport.
2021-01-10BFD: Dispatch sessions also by interface indexOndrej Zajicek (work)
Direct BFD sessions needs to be dispatched not only by IP addresses, but also by interfaces, in order to avoid collisions between neighbors with the same IPv6 link-local addresses. Extend BFD session hash_ip key by interface index to handle that. Use 0 for multihop sessions. Thanks to Sebastian Hahn for the original patch.
2021-01-07RPKI: Remove port (and SSH username) from 'Cache server' output lineOndrej Zajicek (work)
It was mixed-up if hostname is IPv6 address, and reporting separate values (like port) on separate lines fits better into key-value style of 'show protocols all' output. Also, the patch simplifies transport identification formatting (although it is unused now). Thanks to Alarig Le Lay for the suggestion.
2021-01-07Kernel: Do not check templatesOndrej Zajicek (work)
So one can define kernel protocol template without channels. For other protocols, it is either irrelevant or already done. Thanks to Clemens Schrimpe for the bugreport.
2021-01-07Doc: Describe per-nexthop static route optionsOndrej Zajicek (work)
Also remove description of (no longer supported) per-route 'bfd' option, and add examples of IPv6 routes with link-local nexthops.
2021-01-06Nest: remove last_tx_filter_changeOndrej Zajicek (work)
No longer needed after redesign of export handling.
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.
2021-01-06Kernel: Fix handling of krt_realm with ECMP routesOndrej Zajicek (work)
For ECMP routes, RTA_FLOW attribute must be set per-nexthop, not per-route. Our corresponding krt_realm attribute is per-route. Thanks to Mikhail Petrov for the bugreport.
2020-12-29Nest: Read Babel metric as IGP metricJames Lu
(Minor syntactic changes by committer)
2020-12-28Static: Fix handling of 'net' attribute in per-route filtersOndrej Zajicek (work)
We need to define 'net' field temporarily as it may be accessed by per-route filters. Thanks to Damian Zaremba for the bugreport.
2020-12-28Filter: Fix return on top-levelOndrej Zajicek (work)
Broken detection of top-level case caused crash when return was called from top-of-stack position. It should behave as reject/accept. Thanks to Damian Zaremba for the bugreport.
2020-12-07Nest: Per-channel debug flagsOndrej Zajicek (work)
The patch add support for per-channel debug flags, currently just 'states', 'routes', and 'filters'. Flag 'states' is used for channel state changes, remaining two for routes passed through the channel. The per-protocol debug flags 'routes'/'filters' still enable reporting of routes for all channels, to keep existing behavior. The patch causes minor changes in some log messages.
2020-12-02Filter: Add 'weight' route attributeOndrej Zajicek (work)
Add 'weight' route attribute that allows to get and set ECMP weight of nexthops. Similar to 'gw' attribute, it is limited to the first nexthop, but it is useful for handling BGP multipath, where an ECMP route is merged from multiple regular routes.
2020-11-25BGP: Zero the newly allocated bucket structureOndrej Zajicek (work)
This fixes an issue with dirty node passed to add_tail(). Thanks to Andreas Rammhold for the initial patch.
2020-11-25Log: Fix locking during log reconfigurationOndrej Zajicek (work)
The log subsystem should be locked earlier, as default_log_list() may internally manipulate with the current_log_list (if it is also a default log list).
2020-11-25Log: Reinitialize the static logging structuresOndrej Zajicek (work)
The static logging structures are reused, we need to reinitialize them otherwise add_tail() would fail in debug build. Reinitializing these structures should be fine as the list they belong to is being reinitialized on entry to the very same function. Thanks to Andreas Rammhold and Mikael Magnusson for patches.
2020-11-24Minor cleanups with cfg_allocz()Ondrej Zajicek (work)
Also fixes some more failed asserts due to add_tail().
2020-11-24Fix some failed asserts due to add_tail()Ondrej Zajicek (work)
When config structures are copied due to template application, we need to reset list node structure before calling add_tail(). Thanks to Mikael Magnusson for patches.
2020-11-24Some minor sl_allocz() cleanupsOndrej Zajicek (work)
2020-11-24lib/slab: introduce sl_allocz() function and use it in BabelToke Høiland-Jørgensen
The babel protocol code was initialising objects returned from the slab allocator by assigning to each of the struct members individually, but wasn't touching the NODE member while doing so. This leads to warnings on debug builds since commit: baac7009063d ("List expensive check.") To fix this, introduce an sl_allocz() variant of the slab allocator which will zero out the memory before returning it, and switch all the babel call sites to use this version. The overhead for doing this should be negligible for small objects, and in the case of babel, the largest object being allocated was being zeroed anyway, so we can drop the memset in babel_read_tlv().
2020-11-19Static: Support for multiple routes with the same networkOndrej Zajicek (work)
Add support for proper handling of multiple routes with the same network to the static protocol. Routes are distinguished by internal index, which is assigned automatically (sequentially for routes within each network). Having different route preference or igp_metric attribute is optional.
2020-11-18Doc: Added example of static routes with BGP large communitiesNigel Kukard
2020-11-18OSPFv3: Fix intra-area-prefix-LSA origination on DROndrej Zajicek (work)
When a new link-LSA is originated, we need to notify intra-area-prefix-LSA handling, like when a new link-LSA is received. Otherwise a new network prefix added to a DR is not propagated immediately. Thanks to Bala Sajja for the bugreport.
2020-11-15Doc: Fix typoOndrej Zajicek (work)
Thanks to Hexhu for the bugreport.
2020-11-15Nest: Fix crash in receive limit handling in import tableOndrej Zajicek (work)
Logging as a result of triggered receive limit in import table code accesset rte->net, which was not filed yet. Thanks to Pier Carlo Chiodi for the bugreport.
2020-11-12BFD: Update documentation about per-session optionsOndrej Zajicek (work)
2020-11-12BFD: Better handling of BFD options in BGP configsOndrej Zajicek (work)
Merge multiple BFD option blocks in BGP configs instead of using the last one. That is necessary for proper handling of templates when BFD options are used both in a BGP template and in a BGP protocol derived from that template.
2020-11-12BFD: Fix superfluous reconfiguration of sessionsOndrej Zajicek (work)
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).
2020-10-11RPKI: Add 'ignore max length' optionOndrej Zajicek (work)
Add 'ignore max length' option to RPKI protocol, which ignores received max length in ROA records and instead uses max value (32 or 128). This may be useful for implementing loose RPKI check for blackholes.
2020-10-05Doc: Fix missing semicolonsOndrej Zajicek (work)
Thanks to Marco Gartmann for the bugreport.
2020-10-05Doc: Fix typoOndrej Zajicek (work)
Thanks to Sergey Kulikov for the bugreport.
2020-08-31OSPF: Fixed a debug assertMaria Matejka
2020-08-12OSPF: Skip out-of-state packets earlierOndrej Zajicek (work)
Sometimes multicast OSPF packet is received when neighbor adjacency is not established. Such packet should be ignored earlier in packet processing as otherwise it causes strange error messages when OSPFv3 authentication is enabled.
2020-07-16Nest: Keep route ordering during route updatesOndrej Zajicek (work)
Put new non-best routes to the end of list instead of the second position. Put updated routes to their old position. Position is changed just by best route selection.
2020-06-28Show info from multiple protocols when protocol is not specifiedOndrej Zajicek (work)
Most commands like 'show ospf neighbors' fail when protocol is not specified and there are multiple instances of given protocol type. This is annoying in BIRD 2, as many protocols have IPv4 and IPv6 instances. The patch changes that by showing output from all protocol instances of appropriate type. Note that the patch also removes terminating cli_msg() call from these commands and moves it to the common iterating code.
2020-06-28Filter: Improve handling of sets in BGP path masksKazuki Yamaguchi
Compare the content of PM_ASN_SET in path masks. A reconfiguration was not properly triggering a reload of affected protocols when the members of a set in a path mask change. Also, update the printing code to so that it can display sets in a path mask.
2020-06-28Filter: Fix comparison of BGP path maskKazuki Yamaguchi
Add a missing return statement. Path masks with the same length were all considered the same. Comparing two with different length would cause out-of-bounds memory access.
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