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2018-03-07Babel: Fix build with restricted protocol setOndrej Zajicek (work)
All keywords used in Babel config have to be declared locally. Thanks to Leo Vandewoestijne for the bugreport.
2017-09-06Basic VRF supportOndrej Zajicek (work)
Add basic VRF (virtual routing and forwarding) support. Protocols can be associated with VRFs, such protocols will be restricted to interfaces assigned to the VRF (as reported by Linux kernel) and will use sockets bound to the VRF. E.g., different multihop BGP instances can use diffent kernel routing tables to handle BGP TCP connections. The VRF support is preliminary, currently there are several limitations: - Recent Linux kernels (4.11) do not handle correctly sockets bound to interaces that are part of VRF, so most protocols other than multihop BGP do not work. This will be fixed by future kernel versions. - Neighbor cache ignores VRFs. Breaks config with the same prefix on local interfaces in different VRFs. Not much problem as single hop protocols do not work anyways. - Olock code ignores VRFs. Breaks config with multiple BGP peers with the same IP address in different VRFs. - Incoming BGP connections are not dispatched according to VRFs. Breaks config with multiple BGP peers with the same IP address in different VRFs. Perhaps we would need some kernel API to read VRF of incoming connection? Or probably use multiple listening sockets in int-new branch. - We should handle master VRF interface up/down events and perhaps disable associated protocols when VRF goes down. Or at least disable associated interfaces. - Also we should check if the master iface is really VRF iface and not some other kind of master iface. - BFD session request dispatch should be aware of VRFs. - Perhaps kernel protocol should read default kernel table ID from VRF iface so it is not necessary to configure it. - Perhaps we should have per-VRF default table.
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.
2016-11-08Minor code cleanupsOndrej Zajicek (work)
2016-11-02OSPF: Use message authentication interfaceOndrej Zajicek (work)
Based on former commit from Pavel Tvrdik
2016-11-02Add generic message authentication interfaceOndrej Zajicek (work)
Add generic interface for generating and verifying MACs (message authentication codes). Replace multiple HMAC implementation with a generic one.
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.
2016-05-12Prog Doc: Complete several missing parametersPavel Tvrdik
2016-03-23OSPF: Fix bogus LSA ID collisions between received and originated LSAsOndrej Zajicek (work)
After restart, LSAs locally originated by the previous instance are received from neighbors. They are installed to LSA db and flushed. If export of a route triggers origination of a new external LSA before flush of the received one is complete, the check in ospf_originate_lsa() causes origination to fail (because en->nf is NULL for the old LSA and non-NULL for the new LSA). The patch fixes this by updating the en->nf for LSAs being flushed (as is already done for empty ones). Generally, en->nf field deserves some better description in the code. Thanks to Jigar Mehta for analyzing the problem.
2016-03-23OSPF: Fix reading from freed memoryOndrej Zajicek (work)
Thanks to Pavel Tvrdik for noticing it.
2016-02-25OSPF: Multicast ability is irrelevant for stub interfacesOndrej Zajicek (work)
2015-11-24MD5: Mormalize naming stylePavel Tvrdík
2015-10-17Merge branch 'master' into rip-newOndrej Zajicek (work)
2015-10-05Major RIP redesignOndrej Zajicek (work)
The new RIP implementation fixes plenty of old bugs and also adds support for many new features: ECMP support, link state support, BFD support, configurable split horizon and more. Most options are now per-interface.
2015-08-19OSPF: Fixes some issues with link detectionOndrej Zajicek
Thanks to Bernardo Figueiredo and Israel G. Lugo for the bugreport.
2015-07-20Static: Allows to specify attributes for static routesOndrej Zajicek
The patch adds suport for specifying route attributes together with static routes, e.g.: route 10.1.1.0/24 via 10.0.0.1 { krt_advmss = 1200; ospf_metric1 = 100; };
2015-06-08Moving of mulipath merging code from OSPF to nestOndrej Zajicek
2015-06-08unsgined char -> bytePavel Tvrdík
2015-06-01Typo fix by Hans van KranenburgOndrej Filip
2015-05-01OSPF: Redesign LSA checksummingOndrej Zajicek
New LSA checksumming code separates generic Fletcher-16 and OSPF-specific code and avoids back and forth endianity conversions, making it much more readable and also several times faster.
2015-04-28OSPF: Fixes validation of LSA checksumsOndrej Zajicek
Prior to this patch, BIRD validates the OSPF LSA checksum by calculating a new checksum and comparing it with the checksum in the header. Due to the specifics of the Fletcher checksum used in OSPF, this is not necessarily correct as the checkbytes in the header may be calculated via a different means and end up with a different value that is nonetheless still correct. The documented means of validating the checksum as specified in RFC 905 B.4 is to calculate c0 and c1 from the unchanged contents of the packet, which must result in a zero value to be considered valid. Thanks to Chris Boot for the patch.
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.
2015-04-12Minor fixesOndrej Zajicek
2015-02-21Store protocol config size inside protocol structureOndrej Zajicek
Make proto_config_new() use this info instead of supplied size. Thanks to Alexander V. Chernikov for the patch.
2014-11-03Bugfix in latest OSPF changes.Ondrej Zajicek
2014-11-03Bugfix to OSPF reconfiguration.Ondrej 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
2014-05-18IPv4/IPv6 integrated socket code.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.
2014-03-31Check validity of interface definitions.Ondrej Zajicek
Thanks to Aleksey Berezin for the bugreport.
2014-02-06Fixes crash when state of disabled OSPF protocol is queried.Ondrej Zajicek
Thanks to Ondrej Caletka for the bugreport.
2014-02-06Silence this annoying warning.Ondrej Zajicek
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
2013-11-25Merge branch 'master' into add-pathOndrej Zajicek
2013-11-24OSPF ifaces on loopback should be stub.Ondrej Zajicek
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
2013-11-22Minor fixes.Ondrej Zajicek
2013-11-22Adds check for buffer size in OSPF LSA flood.Ondrej Zajicek
2013-11-22Merge commit 'origin/bfd'Ondrej Zajicek
2013-11-19BFD protocol, ready for release.Ondrej Zajicek
Supports OSPF and BGP and also statically configured sessions.
2013-10-21Accepts a change of OSPFv3 neighbor's IP address.Ondrej Zajicek
Thanks to Pierre Pfister for the patch.
2013-09-26Fixes build issues without BGP.Ondrej Zajicek
Thanks to Sergey Popovich for the patch.
2013-09-16BFD work in progress.Ondrej Zajicek
Now it compiles and mostly works.
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