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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.
2020-04-09Configuration strings are constant.Maria Matejka
This is merely a const propagation. There was no problem in there.
2019-07-15Merge remote-tracking branch 'origin/master' into mq-filter-stackMaria Matejka
2019-07-10OSPF: Fix handling of NSSA option flagsOndrej Zajicek (work)
Per RFC 3101, N-bit signalling NSSA support should be used only in Hello packets, not in DBDES packets. BIRD since 2.0.4 verifies N-bit in neighbor structure, which is learned from DBDES packets, therefore NSSA-LSAs are not propagated to proper implementations of RFC 3101. This patch fixes that. Both removing the check and removing N-bit from DBDES packet. This will fix compatibility issues with proper implementations, but causes compatibility issues with BIRD 2.0.4.
2019-07-10Merge branch 'master' into mq-filter-stackMaria Matejka
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.
2019-07-03Merge branch 'master' into mq-filter-stackMaria Matejka
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.
2019-02-20Filter + Config: Fix bugs, tests and split symbols by typeMaria Matejka
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.
2019-02-03OSPF: Reject duplicate DBDES packets after dead intervalOndrej Zajicek (work)
Master may free last DBDES packet immediately. Slave must wait dead interval before freeing last DBDES packet and then reject duplicate DBDES packets with SeqNumberMismatch.
2019-02-03OSPF: DD seqnum should be initialized only for first attemptsOndrej Zajicek (work)
After SeqNumberMismatch/BadLSReq, we should continue with the old seqnum++. The old code tries to do that by n->adj, but it was set nowhere.
2019-01-24OSPF: Opaque LSAs and Router Information LSAOndrej Zajicek (work)
Add support for OSPFv2 Opaque LSAs (RFC 5250) and for Router Information LSA (RFC 7770). The second part is here mainly for testing opaque LSAs.
2018-05-29Protocol: Introducing an enum protocol_classJan Maria Matejka
This supersedes the EAP_* constants.
2018-04-25OSPF: Support of authentication trailer for OSPFv3Ondrej Zajicek (work)
Implement RFC 7166, crypthographic authentication for OSPFv3 analogous to authentication used for OSPFv2.
2017-12-07Timers: Revert temporary names and remove old timer.hOndrej Zajicek (work)
2017-12-07Timers: Fix TBF and some last remainsOndrej Zajicek (work)
2017-12-07BGP: Update to new timersOndrej Zajicek (work)
2017-12-07OSPF: Update to new timersOndrej Zajicek (work)
Note that recurrent timers are currently limited to ~1 hour.
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.
2016-11-08Merge branch 'master' into int-newOndrej Zajicek (work)
2016-11-02OSPF: Use message authentication interfaceOndrej Zajicek (work)
Based on former commit from Pavel Tvrdik
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.
2016-05-10Build system reworked to one global Makefile with includes and no nestingJan Moskyto Matejka
Also removed the lib-dir merging with sysdep. Updated #include's accordingly. Fixed make doc on recent Debian together with moving generated doc into objdir. Moved Makefile.in into root dir Retired all.o and birdlib.a Linking the final binaries directly from all the .o files.
2015-12-29Move ID allocator to a separate file and use it also in OSPFOndrej Zajicek (work)
2015-12-21Follow-up work on integrationOndrej Zajicek (work)
Contains some patches from Jan Moskyto Matejka
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
2015-11-12Follow-up commit on integrated BIRDOndrej Zajicek (work)
Use net_addr for interface address prefixes, support net_addr in configuration parser.
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.
2015-04-12Minor fixesOndrej Zajicek
2014-11-03Fininshing integrated OSPF.Ondrej Zajicek
2014-10-24Integrated IP functions.Ondrej Zajicek
2014-10-24Refactoring of OSPF messages.Ondrej Zajicek
2014-07-21OSPF instance id option and documentation update.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
2013-11-19BFD protocol, ready for release.Ondrej Zajicek
Supports OSPF and BGP and also statically configured sessions.
2013-06-25Implements TTL security for OSPF and RIP.Ondrej Zajicek
Interfaces for OSPF and RIP could be configured to use (and request) TTL 255 for traffic to direct neighbors. Thanks to Simon Dickhoven for the original patch for RIPng.
2013-06-24Better packet priority and traffic class handling.Ondrej Zajicek
Implements support for IPv6 traffic class, sets higher priority for OSPF and RIP outgoing packets by default and allows to configure ToS/DS/TClass IP header field and the local priority of outgoing packets.
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.
2013-04-17Fixes a compatibility issue in OSPFv2 PtP links.Ondrej Zajicek
BIRD used zero netmask in hello packets on all PtP links, not just on unnumbered ones. This patch fixes it and adds option 'ptp netmask' for overriding the default behavior. Thanks to Alexander V. Chernikov for the original patch.
2012-10-31Fixes another bug in OSPFv3 vlinks.Ondrej Zajicek
2012-05-14Real broadcast mode for OSPFv2.Ondrej Zajicek
2012-03-16Adds filtering to 'show ospf lsadb' command.Ondrej Zajicek
Thanks Alexander V. Chernikov for the original patch.
2012-01-22Some more verbose warnings.Ondrej Zajicek
2011-11-07Implements protocol templates.Ondrej Zajicek
Based on the patch from Alexander V. Chernikov. Extended to support almost all protocols. Uses 'protocol bgp NAME from TEMPLATE { ... }' syntax.
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