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150 commits

Author SHA1 Message Date
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
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
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
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
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
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
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
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
7d875e094b Added missing includes. 2002-11-13 08:47:06 +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
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
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
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
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
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
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
efcece2da3 Better reporting of both local and remote errors. 2000-04-25 21:13:25 +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
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
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