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path: root/proto/ospf/rt.c
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2021-10-13Dropping the RTS_DUMMY temporary route storage.Maria Matejka
Kernel route sync is done by other ways now and this code is not used currently.
2021-10-13OSPF: Convert the rte-local attributes to extended attributesMaria Matejka
2021-10-13Route: moved rte_src pointer from rta to rteMaria Matejka
It is an auxiliary key in the routing table, not a route attribute.
2021-10-13Preference moved to RTA and set explicitly in protocolsMaria Matejka
2021-05-26OSPF: Fix OSPFv3 in IPv4 mode with multiple areasOndrej Zajicek (work)
Some area handling code got confused by IPv4 setup in OSPFv3 mode.
2021-05-10OSPF: Allow ifaces with host address as unnumbered PtP or PtMP ifacesOndrej Zajicek (work)
Ifaces with host address (/32) were forced to be stubby, but now they can be used as PtP or PtMP. For these ifaces we need to: - Do not force stub mode - Accept packets from any IP as local - Accept any configured neighbor as local - Detect ifaces properly as unnumbered - Use ONLINK flag for nexthops
2020-05-26OSPF: Fix handling of unnumbered PtPsOndrej Zajicek (work)
This issue has a long history. In 2012, we changed data field for unnumbered PtP links from iface id (specified by RFC) to IP address based on reports of bugs in Quagga that required it, and we used out-of-band information to distinquish unnumberred PtPs with the same local IP address. Then with OSPF graceful restart implementation, we found that we can no longer use out-of-band information, and we need to use only LSAdb info for routing table calculation, but i forgot to finish handling of this case, so multiple unnumbered PtPs with the same local IP addresses were broken. Considering that even recent Mikrotik RouterOS has broken next hop calculation that depends on IP address in PtP link data field, we cannot just switch back to the iface id for unnumbered PtP links. The patch makes two changes: First, it goes back to use out-of-band (position) info for distinguishing local interfaces in SPF when graceful restart is not enabled, while still uses LSAdb-only approach for SPF calculation when graceful restart is enabled. Second, it adds OSPF interface option 'ptp address', which controls whether IP address or iface id is used in data field. It is enabled by default except for unnumbered PtP links with enabled graceful restart. Thanks to Kenth Eriksson for the bugreport and Joakim Tjernlund for suggestions.
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.
2019-06-30OSPF: 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.
2019-03-06OSPF: 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.
2019-02-13OSPF: 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.
2018-06-27Nest: Neighbor cache cleanupsOndrej Zajicek (work)
Simplify neighbor cache code, fix several minor bugs, and improve handling of ONLINK flag.
2018-05-29OSPF: Fix invalid NSSA RFC referencesOndrej Zajicek (work)
2017-12-07Timers: Revert temporary names and remove old timer.hOndrej Zajicek (work)
2017-12-07OSPF: Update to new timersOndrej Zajicek (work)
Note that recurrent timers are currently limited to ~1 hour.
2017-10-10OSPF: Fix next hop calculation for PtP links in IPv4 OSPFv3-AFOndrej Zajicek (work)
In such case, next hop has to be taken from Link-LSA like in broadcast case, not from neighbor source address like in other PtP cases. Also add some checks, comments and code cleanup.
2017-10-10OSPF: Support of address families in OSPFv3Ondrej Zajicek (work)
OSPFv3-AF can handle multiple topologies of diferent address families (IPv4, IPv6, both unicast and multicast) using separate instances distinguished by instance ID ranges.
2017-02-22Merge branch 'int-new' into nexthop-mergedJan Moskyto Matejka
2017-02-20Several minor fixesOndrej Zajicek (work)
2017-02-08Merge branch 'master' into int-newOndrej Zajicek (work)
2016-12-22Nexthop: Support for label stack in nestJan Moskyto Matejka
2016-12-22Removing (struct rta)->cast. Never used.Jan Moskyto Matejka
2016-12-22Merged multipath and single-path data structures.Jan Moskyto Matejka
Dropped struct mpnh and mpnh_*() Now struct nexthop exists, nexthop_*(), and also included struct nexthop into struct rta. Also converted RTD_DEVICE and RTD_ROUTER to RTD_UNICAST. If it is needed to distinguish between these two cases, RTD_DEVICE is equivalent to IPA_ZERO(a->nh.gw), RTD_ROUTER is then IPA_NONZERO(a->nh.gw). From now on, we also explicitely want C99 compatible compiler. We assume that this 20-year norm should be known almost everywhere.
2016-12-15OSPF: Fix ECMP external mergingOndrej Zajicek (work)
The variable nfa is not cleaned before each loop iteration and can have a wrong value of nfa.nhs_reuse from the previous step. Thanks to Bernardo Figueiredo for the bugreport and analysis.
2016-12-13OSPF: Fix net-summary origination combined with stubnet optionOndrej Zajicek (work)
Stubnet nodes in OSPF FIB were removed during rt_sync(), but the pointer remained in top_hash_entry.nf, so net-summary LSA origination was confused, reported 'LSA ID collision' and net-summary LSAs were not originated properly. Thanks to Naveen Chowdary Yerramneni for bugreport and analysis.
2016-11-09 Unit Testing for BIRDOndrej Zajicek (work)
- Unit Testing Framework (BirdTest) - Integration of BirdTest into the BIRD build system - Tests for several BIRD modules Based on squashed Pavel Tvrdik's int-test branch, updated for current int-new branch.
2016-11-08Merge branch 'master' into int-newOndrej Zajicek (work)
2016-11-08Minor code cleanupsOndrej Zajicek (work)
2016-11-01Build: switch on -Wextra, get rid of most of the warningsJan Moskyto Matejka
There are several unresolved -Wmissing-field-initializers on older versions of GCC than 5.1, all of them false positive.
2016-04-08Route update: move table lookup from protocols into rte_update2().Jan Moskyto Matejka
Many protocols do almost the same when creating a rte_update request before calling rte_update2(). This commit should simplify the protocol side of the route-creation routine.
2016-02-01Channels - explicit links between protocols and tablesOndrej Zajicek (work)
The patch adds support for channels, structures connecting protocols and tables and handling most interactions between them. The documentation is missing yet.
2015-12-29Move ID allocator to a separate file and use it also in OSPFOndrej Zajicek (work)
2015-12-21Modify FIB_WALK() and FIB_ITERATE() to work with new FIB codeOndrej Zajicek (work)
Returned user data pointers have offset relative to fib_node.
2015-12-21Follow-up work on integrationOndrej Zajicek (work)
2015-12-19Removed BITS_PER_IP_ADDRESS, MAX_PREFIX_LENGTH, BIRD_AFJan Moskyto Matejka
Explicit setting of AF_INET(6|) in IP socket creation. BFD set to listen on v6, without setting the V6ONLY flag to catch both v4 and v6 traffic. Squashing and minor changes by Ondrej Santiago Zajicek
2015-11-05Initial commit on integrated BIRDOndrej Zajicek (work)
New data types net_addr and variants (in lib/net.h) describing network addresses (prefix/pxlen). Modifications of FIB structures to handle these data types and changing everything to use these data types instead of prefix/pxlen pairs where possible. The commit is WiP, some protocols are not yet updated (BGP, Kernel), and the code contains some temporary scaffolding. Comments are welcome.
2015-06-08Moving of mulipath merging code from OSPF to nestOndrej Zajicek
2015-06-08unsgined char -> bytePavel TvrdĂ­k
2015-04-18OSPF: Fixes handling of external routes with immediate gwOndrej Zajicek
The bug caused that received external LSAs with locally reachable next hops were ignored. I wonder why nobody noticed it sooner.
2014-10-24Integrated IP functions.Ondrej Zajicek
2014-10-24Refactoring of OSPF messages.Ondrej Zajicek
2014-07-19Whitespace cleanup in OSPF.Ondrej Zajicek
2014-07-18Temporary integrated OSPF commit.Ondrej Zajicek
2014-06-26Temporary integrated OSPF commit.Ondrej Zajicek
2014-04-23Extends multipath support for OSPF.Ondrej Zajicek
Fixes cases where the same network or external route are propagated by several OSPF routes and some other corner cases in next hop construction and ECMP. Allows to specify whether external routes should be merged. Thanks to Peter Christensen for the original patch.
2014-02-06Many changes in I/O and OSPF sockets and packet handling.Ondrej Zajicek
I/O: - BSD: specify src addr on IP sockets by IP_HDRINCL - BSD: specify src addr on UDP sockets by IP_SENDSRCADDR - Linux: specify src addr on IP/UDP sockets by IP_PKTINFO - IPv6: specify src addr on IP/UDP sockets by IPV6_PKTINFO - Alternative SKF_BIND flag for binding to IP address - Allows IP/UDP sockets without tx_hook, on these sockets a packet is discarded when TX queue is full - Use consistently SOL_ for socket layer values. OSPF: - Packet src addr is always explicitly set - Support for secondary addresses in BSD - Dynamic RX/TX buffers - Fixes some minor buffer overruns - Interface option 'tx length' - Names for vlink pseudoifaces (vlinkX) - Vlinks use separate socket for TX - Vlinks do not use fixed associated iface - Fixes TTL for direct unicast packets - Fixes DONTROUTE for OSPF sockets - Use ifa->ifname instead of ifa->iface->name
2013-11-23Merge branch 'master' into add-pathOndrej Zajicek
Conflicts: filter/filter.c nest/proto.c nest/rt-table.c proto/bgp/bgp.h proto/bgp/config.Y
2013-06-11Implements OSPF stub router option (RFC 3137).Ondrej Zajicek
Also fixes OSPFv3 routing table calculcation w.r.t. errata 2078 to RFC 5340.
2012-08-14Implements ADD-PATH extension for BGP.Ondrej Zajicek
Allows to send and receive multiple routes for one network by one BGP session. Also contains necessary core changes to support this (routing tables accepting several routes for one network from one protocol). It needs some more cleanup before merging to the master branch.
2012-07-26Fixes default route in OSPF multiple area setting.Ondrej Zajicek