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609 Commits

Author SHA1 Message Date
Ondrej Zajicek (work)
66dbdbd993 BGP: Support for large communities 
Add support for large communities (draft-ietf-idr-large-community),
96bit alternative to RFC 1997 communities.

Thanks to Matt Griswold for the original patch.
 2016-10-03 12:48:56 +02:00
Ondrej Zajicek (work)
ea0cb652e9 BGP: Fix extended messages 
Change attribute length limit to handle extended (64 kB) messages.

Do not mix updates and withdraws (RFC 7606).
 2016-07-11 20:41:32 +02:00
Ondrej Zajicek (work)
775a5a8195 BGP: Skip empty path segments in received AS_PATH 
Although RFC 4271 does not forbid empty path segments, they are useless
and some implementations consider them invalid. It is clarified in RFC 7606,
specifying that AS_PATH with empty segment is considered malformed.
 2016-06-29 14:24:32 +02:00
Ondrej Zajicek (work)
af678af0d5 Merge remote-tracking branch 'origin/master' into int-new 2016-05-12 18:03:23 +02:00
Jan Moskyto Matejka
0c6dfe5236 Merge branch 'int-new' into int-new-merged 2016-05-10 14:30:49 +02:00
Jan Moskyto Matejka
7152e5efbb Build system reworked to one global Makefile with includes and no nesting 
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.
 2016-05-10 14:07:34 +02:00
Ondrej Zajicek (work)
a7baa09862 BSD: Add the IPsec SA/SP database entries control 
Add code for manipulation with TCP-MD5 keys in the IPsec SA/SP database
at FreeBSD systems. Now, BGP MD5 authentication (RFC 2385) keys are
handled automatically on both Linux and FreeBSD.

Based on patches from Pavel Tvrdik.
 2016-04-13 14:37:09 +02:00
Jan Moskyto Matejka
7a7ac65682 Merge branch 'master' into int-new-channels 2016-04-08 12:28:33 +02:00
Ondrej Zajicek (work)
bd22d7f41d IO: Avoid multiple event cycles in one loop cycle. 
Event cycle may took too much time and trigger next timer events, so
avoid cycling between timer and event cycles inside the loop cycle.
 2016-04-06 11:57:28 +02:00
Ondrej Zajicek (work)
9e7b3ebdf9 IO: Replace RX priority heuristic with explicit mark 
In BIRD, RX has lower priority than TX with the exception of RX from
control socket. The patch replaces heuristic based on socket type with
explicit mark and uses it for both control socket and BGP session waiting
to be established.

This should avoid an issue when during heavy load, outgoing connection
could connect (TX event), send open, but then failed to receive OPEN /
establish in time, not sending notifications between and therefore
got hold timer expired error from the neighbor immediately after it
finally established the connection.
 2016-04-06 11:49:34 +02:00
Ondrej Zajicek (work)
487c6961cb BGP: Fix bug in incoming connection handling 
When a BGP session was established by an outgoing connection with
Graceful Restart behavior negotiated, a pending incoming connection in
OpenSent state, and another incoming connection was received, then the
outgoing connection (and whole BGP session) was closed, but the old
incoming connection was just overwritten by the new one. That later
caused a crash when the hold timer from the old connection fired.
 2016-02-11 16:38:28 +01:00
Ondrej Zajicek (work)
f4a60a9bc4 Channels - explicit links between protocols and tables 
The patch adds support for channels, structures connecting protocols and
tables and handling most interactions between them. The documentation is
missing yet.
 2016-02-01 10:28:50 +01:00
Ondrej Zajicek (work)
52e21323b6 BGP: Update capability number from IANA for extended messages 2015-11-25 15:52:58 +01:00
Ondrej Zajicek
06e0d1b692 BGP: Extended messages support 
Implements draft-ietf-idr-bgp-extended-messages-10, for now
undocumented and with temporary private capability number.
 2015-07-18 13:38:21 +02:00
Ondrej Zajicek
8d9eef1771 BGP multipath support 
Kernel option 'merge paths' allows to merge routes exported to kernel
protocol (currently BGP and static routes) to multipath routes.
 2015-06-08 02:24:08 +02:00
Pavel Tvrdík
ae80a2de95 unsigned [int] -> uint 2015-06-08 02:24:08 +02:00
Ondrej Zajicek
d924d5a562 BGP: Fixes serious bug in TX handling 
Under some circumstances and heavy load, TX could be postponed
until the session fails with hold timer expired.

Thanks to Javor Kliachev for making the bug reproductible.
 2015-04-01 00:10:00 +02:00
Ondrej Zajicek
2eadd36fa0 BGP: AS-wide unique router ID (RFC 6286) support 
RFC 6286 relaxed rules for router IDs, allowing EBGP sessions between
routers with the same ID (but different ASN).
 2015-03-29 21:24:47 +02:00
Ondrej Zajicek
9aed29e605 BGP: Enhanced route refresh (RFC 7313) support 
Also hook feed_done is renamed to feed_end.
 2015-03-29 18:29:49 +02:00
Ondrej Zajicek
509aab5deb Fixes serious bug in BGP add-path 
Temporary rta is reused in BGP, while rta_lookup() breaks it.

Thanks to Alexander Chernikov for analysing the problem.
 2015-03-02 10:58:20 +01:00
Ondrej Zajicek
6cf72d7ad7 Rename BGP option 'start delay' to 'connect delay' 
Also update log message for error-triggered startup delay.
 2015-02-22 17:21:54 +01:00
Ondrej Zajicek
a1beb8f3ee Relax BGP neighbor parameter 
Permit specifying neighbor address, AS number and port independently.
Add 'interface' parameter for specifying interface for link-local
sessions independently.

Thanks to Alexander V. Chernikov for the original patch.
 2015-02-22 13:50:58 +01:00
Ondrej Zajicek
2bbc308321 Store protocol config size inside protocol structure 
Make proto_config_new() use this info instead of supplied size.

Thanks to Alexander V. Chernikov for the patch.
 2015-02-21 21:08:23 +01:00
Ondrej Zajicek
374917adcc Make BGP protocol instance search a separate function 
Thanks to Alexander V. Chernikov for the patch.
 2015-02-21 20:55:43 +01:00
Pavel Tvrdik
4a591d4b94 Replacing GNU old-style field designator extension 2015-02-21 19:31:36 +01:00
Ondrej Zajicek
dfc7a6c6a0 Fixes potential alignment bug in BGP. 
Thanks to Andrew (seti.kr.ua) for the bug report.
 2015-02-21 12:24:30 +01:00
Ondrej Zajicek
523f020b5f Link state support in BGP. 
Configurable fast shutdown of a BGP session when an interface loses link.
 2015-02-21 12:15:56 +01:00
Ondrej Zajicek
88a183c6c9 Integrated IP functions. 2014-10-24 11:11:43 +02:00
Ondrej Zajicek
1123e70740 Implements token bucket filter for rate limiting. 2014-10-02 12:52:50 +02:00
Ondrej Zajicek
dcde7ae597 Allows to configure different remote port for BGP sessions. 
Thanks to João Taveira Araújo for the original patch.
 2014-10-02 12:52:50 +02:00
Ondrej Zajicek
9eceab33f9 String constants could be used for string option values. 
Thanks to Frederik Kriewitz for the patch.
 2014-05-29 23:05:03 +02:00
Ondrej Zajicek
05476c4d04 IPv4/IPv6 integrated socket code. 2014-05-18 11:42:26 +02:00
Ondrej Zajicek
66370eac1f Fixes BGP crash when update with some attributes and empty NLRI is received. 
Thanks to Charlie Allom for the bugreport.
 2014-05-04 11:49:41 +02:00
Ondrej Zajicek
859cbd75e1 Fixes a bug in (mainly) IPv6 BGP. 
Stack variable may be used unitialized and that would lead to spurious
rta_free(), which may cause crash. The bug was introduced in 1.4.1 from
merging add-path branch.

Thanks to Peter Andreev for reporting it and Alexander V. Chernikov for
resolving it.
 2014-04-14 12:50:03 +02:00
Ondrej Zajicek
4e7c974d22 Fixes a bug in graceful restart. 2014-03-24 19:22:19 +01:00
Ondrej Zajicek
227af309e5 Fixes some minor issues in graceful restart. 2014-03-24 12:32:12 +01:00
Ondrej Zajicek
6eda3f135f Documentation (and minor fixes) for BGP graceful restart. 2014-03-23 01:35:33 +01:00
Ondrej Zajicek
0c791f873a BGP graceful restart support. 
Also significant core protocol state changes needed for that,
global graceful restart recovery state and kernel proto support
for recovery.
 2014-03-20 14:07:12 +01:00
Ondrej Zajicek
5c200e0a4d Merge branch 'add-path' 2014-02-06 20:15:05 +01:00
Ondrej Zajicek
6601a14831 Merge branch 'add-path' 2013-12-10 22:30:46 +01:00
Ondrej Zajicek
2d0b7e24a5 Fixes problem with source address selection in BGP and BFD. 2013-12-02 11:54:32 +01:00
Ondrej Zajicek
e7d2ac4401 Finishes add-path. 
Fixes some bugs and uses generic hash implementation.
 2013-12-01 13:49:42 +01:00
Ondrej Zajicek
283c7dfada Merge branch 'master' into add-path 2013-11-25 18:42:47 +01:00
Ondrej Zajicek
f3e5917850 Enables multihop mode for IBGP by default. 
This is more consistent with common usage and also with the behavior of
other implementations (Cisco, Juniper).

Also changes the default for gw mode to be based solely on
direct/multihop.
 2013-11-24 12:37:24 +01:00
Ondrej Zajicek
736e143fa5 Merge branch 'master' into add-path 
Conflicts:

	filter/filter.c
	nest/proto.c
	nest/rt-table.c
	proto/bgp/bgp.h
	proto/bgp/config.Y
 2013-11-23 11:50:34 +01:00
Ondrej Zajicek
77e43c8b72 Minor fixes. 2013-11-22 22:49:04 +01:00
Ondrej Zajicek
0aeac9cb7f Merge commit 'origin/bfd' 2013-11-22 02:48:44 +01:00
Ondrej Zajicek
1ec522538f BFD protocol, ready for release. 
Supports OSPF and BGP and also statically configured sessions.
 2013-11-19 22:33:48 +01:00
Ondrej Zajicek
a15dab76f9 Implements 'allow local as' option. 
Similar to allowas-in option on other routers.
 2013-10-21 14:59:35 +02:00
Ondrej Zajicek
b21955e058 Fixes a bug related to mixed up neighbor events in BGP. 
Neighbor events related to received route next hops got mixed up with
sticky neighbor node for an IP of the BGP peer. If a neighbor for a next
hop disappears, BGP session is shut down.
 2013-08-13 20:42:43 +02:00
Ondrej Zajicek
ac57451348 Implements RFC 6608 Subcodes for BGP FSM Error. 2013-07-25 13:55:24 +02:00
Ondrej Zajicek
48b15ef10f Fixes stuck connection during BGP session shutdown. 
If TX buffers were full during BGP session shutdown
then a protocol waited indefinitely to be able to
send notification packet to close the session.
 2013-07-13 01:39:41 +02:00
Ondrej Zajicek
9c99d753fd Fixes a problem with BGP neighbors, link-local addresses and locking. 
Thanks to Fritz Grimpen for the bugfix.
 2013-05-09 11:11:06 +02:00
Ondrej Zajicek
572c644043 Fixes a crash when mrtdump is enabled and interface goes away. 
Thanks to Peter Christensen for the bugfix.
 2013-04-29 22:08:05 +02:00
Ondrej Zajicek
8bd9b930c3 Fixes a bug in IPv6 BGP next hop processing. 
BGP next hop attributes with empty link-local IPv6 addresses were not
handled properly.

Thanks to Sergey Popovich for the bugfix.
 2013-04-16 17:40:44 +02:00
Ondrej Zajicek
48bc232f08 Implements 'next hop keep' option for BGP. 
This option allows to keep the received next hop even in cases when
the route is sent to an interface with a different subnet.
 2013-04-16 17:27:34 +02:00
Ondrej Zajicek
b662290f40 Separate import and receive limits. 
They have different behavior w.r.t. filtered routes that are kept.
 2013-01-10 13:07:33 +01:00
Ondrej Zajicek
79b4e12e60 Implements interface masks for choosing router id. 
Router ID could be automatically determined based of subset of
ifaces/addresses specified by 'router id from' option. The patch also
does some minor changes related to router ID reconfiguration.

Thanks to Alexander V. Chernikov for most of the work.
 2012-12-27 12:56:23 +01:00
Ondrej Zajicek
1555095795 Changes 'rejected' to 'filtered' in one of the last patches. 2012-11-15 01:29:01 +01:00
Ondrej Filip
e16469bc4d AS# in bgp.agreggator was a signed integer - fixed. 2012-11-12 13:48:29 +01:00
Ondrej Zajicek
cf98be7b67 Allows rejected routes to be kept and examined. 
When 'import keep rejected' protocol option is activated, routes
rejected by the import filter are kept in the routing table, but they
are hidden and not propagated to other protocols. It is possible to
examine them using 'show route rejected'.
 2012-11-10 14:26:13 +01:00
Ondrej Zajicek
094d2bdb79 Implements ADD-PATH extension for BGP. 
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.
 2012-08-14 16:46:43 +02:00
Ondrej Zajicek
5400c0e7f9 Fixes BGP subcode during global shutdown. 2012-08-06 02:42:24 +02:00
Ondrej Zajicek
abced4a914 Merge branch 'rt-accepted' 
Conflicts:

	nest/config.Y
	nest/rt-table.c
	proto/bgp/bgp.c
 2012-07-16 14:44:45 +02:00
Ondrej Zajicek
26822d8fe1 Finalize RA_ACCEPTED handling. 2012-07-16 01:33:02 +02:00
Ondrej Zajicek
47c447c42e Minor cleanups. 2012-05-11 12:10:21 +02:00
Ondrej Zajicek
d9b77cc281 Implements generalized export limits. 
And also fixes some minor bugs in limits.
 2012-04-24 23:39:57 +02:00
Ondrej Zajicek
7d0a31deed Fixes in generalized import limits. 2012-04-21 21:05:36 +02:00
Ondrej Zajicek
ebecb6f6a1 Implements generalized import hooks. 
Thanks to Alexander V. Chernikov for the original patch.
 2012-04-15 15:28:29 +02:00
Ondrej Zajicek
00a09f3c36 Implement RA_ACCEPTED mode of route propagation. 2012-04-15 15:07:58 +02:00
Ondrej Zajicek
c0adf7e9fc Better support for multitable protocols. 
The nest-protocol interaction is changed to better handle multitable
protocols. Multitable protocols now declare that by 'multitable' field,
which tells nest that a protocol handles things related to proto-rtable
interaction (table locking, announce hook adding, reconfiguration of
filters) itself.

Filters and stats are moved to announce hooks, a protocol could have
different filters and stats to different tables.

The patch is based on one from Alexander V. Chernikov, thanks.
 2012-03-15 12:13:04 +01:00
Ondrej Zajicek
39c028e9e9 Assign default protocol preference via proto_config_new(). 
The patch from Alexander V. Chernikov.
 2012-01-24 11:31:00 +01:00
Ondrej Zajicek
3ce1714279 Fixes a new bug in BGP route ordering. 2012-01-20 16:20:03 +01:00
Ondrej Zajicek
d7f469c15c Some minor fixes. 2012-01-09 02:41:13 +01:00
Ondrej Zajicek
53ffbff39f Implements support for link-local addresses in BGP. 
Thanks Matthias Schiffer for the original patch.
 2012-01-08 15:31:34 +01:00
Ondrej Zajicek
69a8259c5e Allows sticky link-local neighbors. 
Allows using NEF_STICKY neighbors with link-local addresses. This is
used for static route nexthops, they can be specified like fe80::1%eth0
.
 2012-01-01 12:14:42 +01:00
Ondrej Zajicek
be4cd99a36 Implements deterministic MED handling. 
Thanks to Alexander V. Chernikov for many suggestions.
 2011-12-22 13:20:29 +01:00
Ondrej Zajicek
a7f23f581f Implements protocol templates. 
Based on the patch from Alexander V. Chernikov.
Extended to support almost all protocols.
Uses 'protocol bgp NAME from TEMPLATE { ... }' syntax.
 2011-11-07 00:31:23 +01:00
Ondrej Zajicek
51947659ab Minor changes in BGP protocol info. 
Shows neighbor IP and ASN even if protocol is down.
 2011-09-04 00:56:02 +02:00
Ondrej Zajicek
6c4df70373 Fixes possible buffer overflow when printing BGP attributes. 
Thanks to Alexander V. Chernikov for the patch.
 2011-09-03 21:59:40 +02:00
Ondrej Zajicek
b1b1943360 The generalized TTL security mechanism (RFC 5082) support. 
Thanks to Alexander V. Chernikov for the patch.
 2011-08-16 23:13:05 +02:00
Ondrej Zajicek
42a0c05408 BGP Extended communities. 2011-08-14 13:55:02 +02:00
Ondrej Zajicek
fdf16eb658 Prints full community lists during 'show route all'. 2011-07-03 19:43:30 +02:00
Ondrej Zajicek
35f8c731ea Fixes output of BGP timers in 'show protocols all'. 2011-06-25 14:51:16 +02:00
Ondrej Zajicek
61c96d7244 Fixes bug that causes crash with strange BGP updates. 2011-05-31 17:27:46 +02:00
Ondrej Zajicek
73272f04af Adds BGP option related to MED handling. 
Adds option 'med metric' allows to compare MEDs
between routes received from different neighbors.
 2011-04-22 16:13:27 +02:00
Ondrej Zajicek
4ef0950603 Fixes a problem with BGP protocols and implicit router IDs. 2011-04-01 13:55:52 +02:00
Ondrej Zajicek
06fb60c4af Fixes some problems in BGP error handling. 2011-03-30 01:09:18 +02:00
Ondrej Zajicek
7e95c05d88 Core multipath support. 2010-12-07 23:33:55 +01:00
Ondrej Zajicek
fcf5a4f4b3 Change default for BGP IPv6 socket to V6ONLY. 
Also add a new option 'dual' for the old behavior.
 2010-11-03 10:02:24 +01:00
Ondrej Zajicek
ac4a1eedfc Change default for handling missing link-local addresses on route servers. 2010-08-13 14:30:36 +02:00
Ondrej Zajicek
265d06dcbc Fixes IPv6 build. 2010-08-04 15:27:11 +02:00
Ondrej Zajicek
d1e146f2f8 Implements IGP metric comparison for BGP routes. 2010-07-31 01:04:32 +02:00
Ondrej Zajicek
ac3ac49a71 Adds route resolvability test. 2010-07-28 13:13:34 +02:00
Ondrej Zajicek
1b180121a9 Use link-local addresses in recursive next hops for IPv6 BGP. 2010-07-28 11:45:35 +02:00
Ondrej Zajicek
852b7062e3 Fixes a buffer overflow in TX code of IPv6 BGP. 2010-07-22 15:09:35 +02:00
Ondrej Zajicek
087cecd0e2 Adds some options and documentation related to recursive next hops. 2010-07-13 12:48:23 +02:00
Ondrej Zajicek
9be9a26413 Implements proper multihop BGP. 
Also does some incompatible changes to config file syntax,
like removing 'via IP' from multihop option.
 2010-07-12 17:39:39 +02:00
Ondrej Zajicek
cfe34a316e Implements hostcache and recursive next hops. 
Hostcache is a structure for monitoring changes in a routing table that
is used for routes with dynamic/recursive next hops. This is needed for
proper iBGP next hop handling.
 2010-07-05 17:50:19 +02:00
Ondrej Zajicek
a34b09349e Disable BGP protocol when cannot open listening socket. 2010-05-31 11:35:29 +02:00
Ondrej Zajicek
475977242a Handle EPIPE as a common connection close event. 2010-05-14 16:54:39 +02:00
Ondrej Zajicek
506fa1a73e Merge several fixes suggested by Joakim Tjernlund. 2010-05-02 22:41:40 +02:00
Ondrej Zajicek
6b5a8649a4 Do not export empty community list attribute in BGP. 2010-04-08 17:56:56 +02:00
Ondrej Zajicek
b8113a5e92 Implements BGP 'show protocols' info details. 2010-04-07 00:19:23 +02:00
Ondrej Zajicek
126683feed Filter language updates; new route attributes and datatype. 
- Adds bgp_originator_id and bgp_cluster_list route attributes.
 - Adds dotted quad filter datatype (for router IDs, used by
   bgp_originator_id and ospf_router_id route attributes).
 - Fixes pair ~ pair set matching.
 - Documentation updates.
 2010-03-29 19:29:03 +02:00
Ondrej Zajicek
3075824dbd Comparing cluster list length should be later in bgp_rte_better(). 2010-02-26 14:09:24 +01:00
Ondrej Zajicek
ff2857b03d Many changes in (mainly) kernel syncers. 
- BSD kernel syncer is now self-conscious and can learn alien routes
- important bugfix in BSD kernel syncer (crash after protocol restart)
- many minor changes and bugfixes in kernel syncers and neighbor cache
- direct protocol does not generate host and link local routes
- min_scope check is removed, all routes have SCOPE_UNIVERSE by default
- also fixes some remaining compiler warnings
 2010-02-26 10:55:58 +01:00
Ondrej Zajicek
e81b440f68 Fix configure to enable warnings and fix most of them. 2010-02-21 14:34:53 +01:00
Ondrej Filip
89534cdae5 'rr client id' is not expression but ID (like router id). 2010-02-20 21:14:02 +01:00
Ondrej Zajicek
dca75fd7c2 Removes phantom protocol from the pipe design. 
It seems that by adding one pipe-specific exception to route
announcement code and by adding one argument to rt_notify() callback i
could completely eliminate the need for the phantom protocol instance
and therefore make the code more straightforward. It will also fix some
minor bugs (like ignoring debug flag changes from the command line).
 2010-02-13 12:26:26 +01:00
Ondrej Zajicek
a2ea1bac60 Moves errno.h include. 2010-02-11 21:19:20 +01:00
Ondrej Zajicek
2af25a971a Fixes a crash caused by missing error hook on BGP listening socket. 
Error happened when too many BGP connections arrived in one moment
(ECONNABORTED).
 2010-02-11 11:12:58 +01:00
Ondrej Zajicek
44f26560ec Workaround for some broken BGP implementations that skip initial KEEPALIVE. 2010-02-02 10:14:21 +01:00
Ondrej Zajicek
41677025ee Changes 'ignore communities' to 'interpret communities'. 2010-01-28 15:59:18 +01:00
Ondrej Zajicek
6cb8f742f1 Better handling of well-known communities. 
Process well-known communities before the export filter (old behavior is
to process these attributes after, which does not allow to send route
with such community) and just for routes received from other BGP
protocols. Also fixes a bug in next_hop check.
 2010-01-27 17:22:57 +01:00
Ondrej Zajicek
cf31112f0d Implements MRTdump feature. 2010-01-03 12:17:52 +01:00
Ondrej Zajicek
fbcb7d5faf Change default LOCAL_PREF attribute to 100 (suggested value by RFC 4277). 2009-12-21 11:50:42 +01:00
Ondrej Zajicek
0225ea4edd Merge branch 'ospf3' into new 2009-12-15 00:32:13 +01:00
Ondrej Zajicek
f2d7da742b Fixes export of routes with link-local gw. 2009-12-15 00:30:07 +01:00
Ondrej Zajicek
43c1ceccb9 Remove bgp_as4_support variable. 2009-12-14 23:31:25 +01:00
Ondrej Zajicek
bf47fe4b2e Implements BGP route refresh. 2009-11-26 20:47:59 +01:00
Ondrej Zajicek
3f9b7bfe9f Implements option that controls IPv6 BGP next hops when lladdr is missing. 2009-11-18 20:32:36 +01:00
Ondrej Zajicek
d0e2d6d1e0 Show both IPv6 next hop addresses in BGP. 2009-11-17 14:17:23 +01:00
Ondrej Zajicek
3228c72cc0 Implements RFC 5004 - prefer older external routes. 2009-11-17 11:41:29 +01:00
Ondrej Zajicek
4cdd078453 Implements protocol-specific router id and updates documentation. 2009-10-12 23:31:42 +02:00
Ondrej Zajicek
52b9b2a178 Rename as_path_get_last/as_path_get_first to be consistent. 2009-10-12 20:44:58 +02:00
Ondrej Zajicek
ea89da381f Workaround for stupid callback scheduler. 
There is no reak callback scheduler and previous behavior causes
bad things during hard congestion (like BGP hold timeouts).

Smart callback scheduler is still missing, but main loop was
changed such that it first processes all tx callbacks (which
are fast enough) (but max 4* per socket) + rx callbacks for CLI,
and in the second phase it processes one rx callback per
socket up to four sockets (as rx callback can be slow when
there are too many protocols, because route redistribution
is done synchronously inside rx callback). If there is event
callback ready, second phase is skipped in 90% of iterations
(to speed up CLI during congestion).
 2009-10-11 18:56:16 +02:00
Ondrej Zajicek
a5bf5f781c Show bad peer AS number in log in decimal. 2009-09-24 23:14:44 +02:00
Ondrej Zajicek
be6e39ebbf Passive option. 2009-09-24 22:12:11 +02:00
Ondrej Zajicek
54fe0d9230 Fixes setting of IP addresses to route attributes (NEXT_HOP). 2009-09-18 13:59:04 +02:00
Ondrej Zajicek
46eb80d5d5 Fixes headers for uintptr_t (and build on NetBSD). 2009-09-17 17:52:36 +02:00
Ondrej Zajicek
05198c12f4 Some cleanups. 2009-08-27 19:01:04 +02:00
Ondrej Zajicek
949bd34e81 Fixes bug related to AS2->AS4 conversion. 2009-08-25 19:01:37 +02:00
Ondrej Zajicek
70670bf317 Fixed bug related to reconfiguration of BGP with MD5 passwords. 2009-07-09 15:42:39 +02:00
Ondrej Zajicek
d72cdff411 Replace 'bind' option with 'listen' option. 
To be consistent with other daemons.
 2009-06-23 11:08:30 +02:00
Ondrej Zajicek
da95a7a7da Fixes bug in ORIGIN check. 2009-06-23 11:00:38 +02:00
Ondrej Zajicek
29c430f856 Changes handling of AS_PATH_CONFED_* segments in AS_PATH. 
Although standard says that if we receive AS_PATH_CONFED_*
(and we are not a part of a confederation) segment, we should
drop session, nobody does that and it is unwise to do that.

Now we drop session just in case that peer ASN is in
AS_PATH_CONFED_* segment (to detect peer that considers BIRD
as a part of its confederation).
 2009-06-23 10:50:57 +02:00
Ondrej Zajicek
789772ed45 Implements option that changes BGP listening socket parametres. 2009-06-18 19:20:07 +02:00
Ondrej Zajicek
b99d378698 Minor BGP changes related to error wait time. 2009-06-07 00:38:38 +02:00
Ondrej Zajicek
7238262671 Fixes bug related to startup delay change. 2009-06-06 18:56:33 +02:00
Ondrej Zajicek
dd91e46765 Differentiate between error delay and connect/reconnect delay. 
The difference is here to reject incoming connections in the
first case.
 2009-06-06 18:16:22 +02:00
Ondrej Zajicek
72b28a041d Implements import route limits. 2009-06-04 13:31:09 +02:00
Ondrej Zajicek
f98e291579 The pipe cleanup. 2009-06-01 14:07:13 +02:00
Ondrej Zajicek
23ac9e9a9e Changes pipes to transfer all routes between routing table, not just optimal routes. 2009-05-31 15:24:27 +02:00
Ondrej Zajicek
10ab65a8c9 Fixes one recently introduced IPv6 BGP compatibility problem. 2009-05-06 15:18:52 +02:00
Ondrej Zajicek
b7a735ea9d Allow 'third party' BGP updates for originated routes. 2009-04-29 22:17:40 +02:00
Ondrej Zajicek
4827b69ff4 Fixes BGP IPv6 link local next hop handling. 
When sending 'third party' BGP update, Bird used bogus link local
addresses instead of addresses it received before.
 2009-04-29 18:58:24 +02:00
Ondrej Zajicek
ad440a570b Fixes handling of 'next hop self' and 'source address' configuration 
options.
 2009-04-28 18:11:56 +02:00
Ondrej Zajicek
64cf11f544 Fixes BGPv6 bug - missing endianity conversion. 
Also removes code skipping SNPAs
(obsoleted by newer RFCs, should be ignored).
 2009-04-23 23:15:07 +02:00
Ondrej Zajicek
f307842ad8 Fixes BGPv6 bug - mandatory attributes weren't validated; 2009-04-23 14:44:02 +02:00
Ondrej Zajicek
8f0c887a52 Fixe bug in BGPv6 that causes to send invalid network withdraws. 2009-04-23 14:16:05 +02:00
Ondrej Zajicek
b9539e78d8 Fixes bug in BGPv6 causing crash by checking missing attributes. 2009-04-23 12:36:24 +02:00
Ondrej Zajicek
48d79d521c Better handling of AS4 optional attribute errors 
AS4 optional attribute errors were handled by session
drop (according to BGP RFC). This patch implements
error handling according to new BGP AS4 draft (*)
 - ignoring invalid AS4 optional attributes.

(*) http://www.ietf.org/internet-drafts/draft-chen-rfc4893bis-02.txt
 2009-03-18 20:30:21 +01:00
Ondrej Zajicek
e8ba557c7f Update capability handshake options 
Add 'capabilities' option, change default behavior to advertise ipv4,
add some checks and ignore incoming capabilities when capabilities
are disabled.
 2009-03-13 12:49:44 +01:00
Ondrej Zajicek
e3299ab148 Added Cisco and Quagga capability workaround option. 2009-03-05 11:52:47 +01:00
Ondrej Zajicek
82a79586e5 Better handling of too long attributes 
This patch extends the length for attributes from 1024 to 2048
(because both AS_PATH and AS4_PATH attributes take 2+4 B per AS).

If there is not enough space for attributes, Bird skips that
route group. Old behavior (skipping remaining attributes)
leads to skipping required attributes and session drop.
 2009-02-27 15:24:46 +01:00
Ondrej Zajicek
cb53039271 Rate limit for most abundant log messages 2009-02-26 14:23:54 +01:00
Ondrej Zajicek
cd17c651a6 Add format for BGP_AGGREGATOR attribute 2009-02-21 17:47:56 +01:00
Ondrej Zajicek
165a622727 Adds support for fallback to capabilityless BGP connect 
When capability related error is received, next connect will be
without capabilities. Also cease error subcodes descriptions
(according to [RFC4486]) are added.
 2008-12-24 17:24:41 +01:00
Ondrej Zajicek
591211557f Fixes bug related to reconfiguration of BGP. 
BGP keeps its copy of configuration ptr and didn't update it during
reconfiguration. But old configuration is freed during reconfiguration.
That leads to unnecessary reset of BGP connection during reconfiguration
(old conf is corrupted and therefore different) and possibly other strange
behavior.
 2008-12-24 12:18:10 +01:00
Ondrej Zajicek
11b32d9117 Major changes to BGP 
Fixes two race conditions causing crash of Bird, several unhandled
cases during BGP initialization, and some other bugs. Also changes
handling of startup delay to be more useful and implement
reporting of last error in 'show protocols' command.
 2008-12-19 01:34:39 +01:00
Ondrej Zajicek
aebe06b40c Proper format functions for ORIGINATOR_ID, CLUSTER_LIST 2008-11-08 23:33:22 +01:00
Ondrej Zajicek
1389f3699f Fixes bugs in IPv6 code caused by recent commits. 2008-11-05 21:39:04 +01:00
Ondrej Zajicek
a39b165e45 Multihop BGP was completely broken, because listening socket has always 
ttl 1.
 2008-11-01 16:58:40 +01:00
Ondrej Zajicek
a92fe60717 Implementation of route server. 2008-11-01 12:55:43 +01:00
Ondrej Zajicek
e16466b379 Fix race condition that breaks BGP connections after reconfigure. 
RFC says that only connections in OpenConfirm and Established state
should participate in connection collision detection.

The current implementation leads to race condition when both sides
are trying to connect at the almost same time, then both sides
receive OPEN message by different connections at the almost same
time and close the other connection. Both connections are
closed and the both sides end in  start/idle or start/active
state.
 2008-10-29 14:16:34 +01:00
Ondrej Zajicek
b6bf284a90 Bugfixes in MULIT_EXIT_DISC attribute handling. 
- Old MED handling was completely different from behavior
   specified in RFCs - for example they havn't been propagated
   to neighboring areas.

 - Update tie-breaking according to RFC 4271.

 - Change default value for 'default bgp_med' configuration
   option according to RFC 4271.
 2008-10-26 22:59:21 +01:00
Ondrej Zajicek
4819c3e17a Bugfix in LOCAL_PREF attribute handling. 2008-10-26 22:54:23 +01:00
Ondrej Zajicek
ba5ed6f3e4 Implementation of an option for disabling AS4 support per BGP instance. 2008-10-26 22:48:02 +01:00
Ondrej Zajicek
4847a894bf Implementation of route reflection for BGP 2008-10-26 22:45:09 +01:00
Ondrej Zajicek
d51aa28190 Implementation of MD5 authentication of BGP sessions. 2008-10-26 22:42:39 +01:00
Ondrej Zajicek
11cb620266 Implementation of 4B ASN support for BGP 2008-10-26 22:36:08 +01:00
Ondrej Filip
85ae398a61 The source address configuration in BGP added. 2008-08-24 23:20:46 +00:00
Ondrej Filip
98ac61766d A lot of changes: 
- metric is 3 byte long now
	- summary lsa originating
	- more OSPF areas possible
	- virtual links
	- better E1/E2 routes handling
	- some bug fixes..

I have to do:
	- md5 auth (last mandatory item from rfc2328)
	- !!!!DEBUG!!!!! (mainly virtual link system has probably a lot of bugs)
	- 2328 appendig E
 2004-06-25 16:39:53 +00:00
Martin Mares
9831e5916f Staticized lots of local functions. 2004-06-05 09:58:23 +00:00
Martin Mares
e21423bab8 ... in BGP. 2004-06-05 09:27:17 +00:00
Ondrej Filip
7fdd338c36 ALIGN -> BIRD_ALIGN 2004-06-01 10:28:25 +00:00
Martin Mares
38a608c55a Rewritten the I/O loop. All socket operations are now safe, meaning that 
you can delete the socket from anywhere in the hooks and nothing should break.
Also, the receive/transmit buffers are now regular xmalloc()'ed buffers,
not separate resources which would need shuffling around between pools.

sk_close() is gone, use rfree() instead.
 2004-05-31 21:48:19 +00:00
Martin Mares
6a57bb3110 Killed a couple of unused variables. 
We really should compile with warnings enabled.
 2004-05-31 20:57:38 +00:00
Martin Mares
6ea8ca1469 Updated a comment. 2003-02-23 10:22:04 +00:00
Martin Mares
11d4474c17 Better selection of link-local NLRI addresses, at least for our own 
address. Need to do it better for the other neighbors -- the current
solution works only if they use the standard 64+64 global addresses
and the interface identifier in lower 64 bits is the same as for the
link-scope addresses.
 2003-02-22 22:47:45 +00:00
Martin Mares
8c92bf6a0d Temporary fix for BGP protocol capability announcement for IPv6 mode. 2003-02-22 10:40:35 +00:00
Martin Mares
60a72ed49b Fixed length check miscalculation in IPv6 receive path. 2003-02-22 10:25:22 +00:00
Martin Mares
7d875e094b Added missing includes. 2002-11-13 08:47:06 +00:00
Martin Mares
de10a974f2 Added missing semicolons. 2002-11-13 08:46:12 +00:00
Martin Mares
bcbdcbb6ae Don't accept incoming connections when the neighbor is not up. 2000-06-20 07:49:08 +00:00
Martin Mares
58f7d004fd Fixes to the progdoc. 2000-06-07 13:25:53 +00:00
Martin Mares
2e9b24211a Spelling fixes to progdoc. 2000-06-07 12:29:08 +00:00
Martin Mares
54e55169da BGP documented. 2000-06-04 17:06:18 +00:00
Martin Mares
bc00185e5a Updated to new neighbor cache. 2000-06-01 13:00:19 +00:00
Martin Mares
fcb5f4a725 Updated all the Doc files to new format. 2000-05-31 11:30:18 +00:00
Martin Mares
7294f68b3b path metric' and disable after error' are switches, not numeric clauses. 2000-05-29 22:08:04 +00:00
Martin Mares
d2a7c0e9b2 Don't print trace messages about null updates. 2000-05-19 18:05:19 +00:00
Martin Mares
5e88d73025 BGP now reports originating AS and origin type in get_route_info(). 2000-05-19 11:01:41 +00:00
Martin Mares
f4ab231746 bgp_get_status: If protocol is down, don't print BGP state. 2000-05-15 12:19:28 +00:00
Martin Mares
e3f2d5fce3 Cleanup of configuration. 
o  Use `expr' instead of `NUM' and `ipa' instead of `IPA',
   so that defined symbols work everywhere.
o  `define' now accepts both numbers and IP addresses.
o  Renamed `ipa' in filters to `fipa'.

Pavel, please update filters to accept define'd symbols as well.
 2000-05-15 11:48:23 +00:00
Martin Mares
02bd064ab7 Adapted to new rt_notify semantics. 2000-05-13 11:02:02 +00:00
Martin Mares
2138d3b4d8 Use correct flags for the LOCAL_PREF attribute. 
When an invalid attribute is found, copy the entire attribute to the data
section of the NOTIFICATION message.
 2000-05-11 12:20:07 +00:00
Martin Mares
c09d1e8df2 KEEPALIVE TIME ought to set keepalive time, not connect retry time :) 2000-05-08 22:32:17 +00:00
Martin Mares
0c3588bf5e Don't crash when the socket gets closed between updates. 
Also, this time not only update `remains', but update it right :)
 2000-05-08 14:53:22 +00:00
Martin Mares
9ff8f334ed Update `remains' counter correctly. 2000-05-08 14:32:19 +00:00
Martin Mares
93d6bf38a6 The bgp_list is gone. Incomming connections are now handled in a much 
more straightforward manner by scanning the active configuration for
matching protocols.
 2000-05-08 13:26:30 +00:00
Martin Mares
507eea4c8b Don't generate corrupted packets when sending only route deletes. 2000-05-08 12:37:24 +00:00
Martin Mares
79681f4a19 Link the instance to the global BGP list as soon as possible. 2000-05-08 11:04:22 +00:00
Martin Mares
acfce55c86 Setup of incoming connection is now a separate function. 2000-05-07 10:41:45 +00:00
Martin Mares
ab1129c1bd Added skeleton Doc files for the whole developer's documentation. 2000-05-05 17:17:42 +00:00
Martin Mares
beaf86e13c Removed RTS_RIP_EXT. 2000-05-04 21:23:10 +00:00
Martin Mares
2a149b18cc Unused variables in IPv6 code. 2000-05-04 20:38:44 +00:00
Martin Mares
93a786cb03 Removed a lot of unused variables. 
Please try compiling your code with --enable-warnings to see them. (The
unused parameter warnings are usually bogus, the unused variable ones
are very useful, but gcc is unable to control them separately.)
 2000-05-04 20:30:36 +00:00
Martin Mares
cf3d6470d7 IPv6 BGP support finished. Also simplified the BGP stuff a bit. 2000-05-04 20:02:56 +00:00
Martin Mares
1c1da87b27 Receive-only IPv6 BGP. 2000-05-04 09:03:31 +00:00
Martin Mares
53943a0022 Defined format specifier %M' which behaves as %m', but takes the 
error code as an argument.

Use it in socket hooks where we really shouldn't rely on errno containing
the right value or even existing.
 2000-05-02 16:10:04 +00:00
Martin Mares
85368cd4b7 Full protocol tracing. 2000-05-02 16:07:41 +00:00
Martin Mares
d1a74339d4 Handle redistribution of unknown attributes correctly. 2000-05-02 12:51:39 +00:00
Martin Mares
cea6366400 The `bgp_origin' attribute is now an enum. 2000-04-28 15:13:29 +00:00
Martin Mares
f94557dec5 Some more fixes for attributeless UPDATEs. 2000-04-27 22:40:19 +00:00
Martin Mares
54896cbdba Path attribute can be missing if we process a packet with empty NLRI section. 2000-04-27 22:31:11 +00:00
Martin Mares
9165888ad2 Handle connect errors correctly. 2000-04-27 19:41:10 +00:00
Martin Mares
5db9bae286 IBGP fixes. 2000-04-26 13:26:31 +00:00
Martin Mares
6fd766c17e Implemented automatic restart after error with all the timers needed. 2000-04-25 23:08:31 +00:00
Martin Mares
8573314326 Avoid printing of error messages on Cease notifications. 2000-04-25 23:08:03 +00:00
Martin Mares
b3155b3399 Randomize timers properly. 2000-04-25 22:01:19 +00:00
Martin Mares
42532f0846 Support dynamic reconfiguration. 2000-04-25 21:58:17 +00:00
Martin Mares
99f70c78e1 Use the same attribute names as in filters. 2000-04-25 21:31:15 +00:00
Martin Mares
684c25d98f When sending BGP attributes, re-create the flags, so that attributes 
added by filters which get the flags wrong are fixed automagically.
 2000-04-25 21:21:52 +00:00
Martin Mares
efcece2da3 Better reporting of both local and remote errors. 2000-04-25 21:13:25 +00:00
Martin Mares
a47a01083b Real parsing of BGP OPEN options including capability 
negotiation.
 2000-04-25 13:32:17 +00:00
Martin Mares
8b258e4e65 LOCAL_PREF is now always present and exported over all ibgp connections [draft] 
Allow setting of address of the local end of the TCP connection.

Several bug fixes.
 2000-04-21 13:01:28 +00:00
Martin Mares
2a9e064d7b If no NLRI's are present in an UPDATE message, parse the attributes, but 
don't check presence of mandatory attributes. [draft-09]
 2000-04-21 12:25:35 +00:00
Martin Mares
7787ace61a Synced to draft-ietf-idr-bgp4-09. 2000-04-20 22:54:22 +00:00
Martin Mares
9bc6ab4041 Fixed reporting of unknown options. 2000-04-20 22:34:50 +00:00
Martin Mares
5f532adde2 Temporarily ignore unknown options. 2000-04-19 13:54:35 +00:00
Martin Mares
f381cdce52 The ATOMIC_AGGREGATE parameter is optional transitive. 2000-04-19 13:54:17 +00:00
Martin Mares
e0d6a7bda4 Delay fetching of router ID. 2000-04-19 13:28:56 +00:00
Martin Mares
035044b1d9 Select the right source address and don't check port numbers. 2000-04-19 12:51:14 +00:00
Martin Mares
bd2d8190dd Honor standard communities (no_export, no_advertise, no_export_subconfed) 
when exporting routes.
 2000-04-17 13:13:08 +00:00
Martin Mares
56a2bed46b Don't import/export MED and LOCAL_PREF on external links. 
Added real comparison of BGP routes (inspired by the Cisco one).
Default local preference and default MED are now settable.
Defined filter keywords for all BGP attributes we know.
 2000-04-17 12:46:07 +00:00
Martin Mares
e3558ab14e Normalize community sets when exporting. 
Set PARTIAL bits correctly.
 2000-04-17 11:25:15 +00:00
Martin Mares
1ed2fe9609 Send and receive communities. 2000-04-17 10:19:15 +00:00
Martin Mares
f421cfdd80 Sending of update messages works! 2000-04-17 09:37:31 +00:00
Martin Mares
c0668f3696 Created nest/a-path.c and a-set.c which should contain general operations 
on AS paths and community sets.

Moved as_path_prepend() there.

Pavel, please move the other functions as well.
 2000-04-17 07:53:29 +00:00
Martin Mares
c8f685cb9d Made last Pavel's changes compile. 2000-04-12 14:14:47 +00:00
Pavel Machek
0a40e97328 as_path_prepend is usable outside bgp. 2000-04-12 14:12:37 +00:00
Martin Mares
c2b28c9910 Real bucket lists. 2000-04-12 14:09:26 +00:00
Pavel Machek
ac7a2145cc f_new_dynamic_attr gets third argument, type as filters know it. 2000-04-12 14:02:04 +00:00
Martin Mares
12d5677aa3 Define BGP_PATH. 2000-04-12 13:56:04 +00:00
Martin Mares
7750634946 Introduced `ARRAY_SIZE' macro to replace all the sizeof(a)/sizeof(*a) constructs. 2000-04-12 13:21:23 +00:00
Martin Mares
ae8f558499 Implemented outgoing attribute cache. 2000-04-10 12:39:51 +00:00
Martin Mares
48e842cc98 Use neighbor cache to track direct route to the peer or multihop destination. 
Calculate next_hop properly based on the local address we get from the
neighbor entry.
 2000-04-10 11:21:40 +00:00
Martin Mares
ef2c708dfa More BGP progress... 
For Pavel: You can use bgp_path_prepend() for prepending AS numbers to AS paths.
 2000-04-09 22:05:02 +00:00
Martin Mares
10be74da20 Formatting of dynamic attributes (except for paths and communities which 
will be added soon).
 2000-04-01 10:21:11 +00:00
Martin Mares
f880924990 BGP now handles incoming routes (IPv4 only). 2000-04-01 09:17:33 +00:00
Martin Mares
c00d31befa Parsing of BGP attributes. 2000-03-31 23:21:37 +00:00
Martin Mares
973399ae2c Basic analysis of UPDATE packets. 2000-03-30 18:44:23 +00:00
Martin Mares
b552ecc4d7 Connection state machine works. 2000-03-30 17:39:48 +00:00
Martin Mares
3fdbafb6f4 More BGP. This time it connects, but the state machine still isn't complete. 2000-03-30 10:44:20 +00:00
Martin Mares
72a6ef11fe Construction of BGP packets. 2000-03-21 15:53:50 +00:00
Martin Mares
c01e37416d Started work on BGP. Wrote main part of the connection handling code. 2000-03-20 21:50:17 +00:00
Martin Mares
2638249d34 Bare skeleton of the BGP. 2000-03-19 22:09:07 +00:00