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path: root/proto/babel/babel.c
AgeCommit message (Collapse)Author
2016-07-19Babel: Do not maintain feasibility distance for our own routesOndrej Zajicek (work)
We do not need to maintain feasibility distances for our own router ID (we ignore the updates anyway). Not doing so makes the routes be garbage collected sooner when export filters change. Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
2016-07-19Babel: Do not keep an infeasible route as selectedOndrej Zajicek (work)
When a route becomes infeasible it should not be kept as selected; this is forbidden by section 3.6 of the RFC and prevents subsequent updates from the same router ID from replacing it. Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
2016-07-19Babel: Send wildcard retractions on shutdown and startupOndrej Zajicek (work)
This makes BIRD send a wildcard retraction on all interfaces before shutting down and right after starting up. This helps ensure that neighbours will discard the announced routes as soon as possible, rather than only after the normal timeout procedures. Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
2016-07-19Babel: Rework handling of retractionsOndrej Zajicek (work)
An update with wildcard AE and infinite metric should be treated as a global retraction of all prefixes announced by that neighbour, per section 4.4.9 of the RFC. In addition, router ID and seqno in retraction updates should be ignored. This reworks the handling of retractions and adjusts the parser to handle all this correctly. Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
2016-04-28Add the Babel routing protocol (RFC 6126)Ondrej Zajicek (work)
This patch implements the IPv6 subset of the Babel routing protocol. Based on the patch from Toke Hoiland-Jorgensen, with some heavy modifications and bugfixes. Thanks to Toke Hoiland-Jorgensen for the original patch.