Commit graph

1492 commits

Author SHA1 Message Date
Ondrej Zajicek (work)
70a4320bdd RAdv: Allow solicited RAs to be sent as unicast
Add option to send solicited router advertisements as unicast directly
to soliciting nodes instead of as multicast to all-nodes group.
2019-08-12 00:43:19 +02:00
Ondrej Zajicek (work)
e2b530aa72 BGP: Improve reconfiguration
Several BGP channel options (including 'next hop self') could be
reconfigured without session reset, with just route refeed/refresh.
The patch improves reconfiguration code to do it that way.
2019-08-06 15:29:06 +02:00
Ondrej Zajicek (work)
f6a6a77640 BGP: Fix 'deterministic med' to work with 'merge paths'
The 'deterministic med' option is implemented by suppressing other than
best-in-group routes (grouped by ASN) from best route selection. This
interferes with 'merge paths' as supressed routes are no longer mergable
with best route. This is fixed by suppressing only those routes that are
not mergable with best-in-group route.
2019-08-06 15:09:42 +02:00
Vincent Bernat
3b62417c35 RPKI: Fix allocation of hostname when using an IPv6 address 2019-07-29 15:42:30 +02:00
Ondrej Zajicek (work)
00284f0ed6 BFD: Fix formatting of 'show bfd sessions'
The formatting was broken due to longer date in 'since' column.
2019-07-25 14:24:16 +02:00
Ondrej Zajicek (work)
cec40a7467 Merge remote-tracking branch 'origin/mq-filter-stack' 2019-07-24 15:38:32 +02:00
Ondrej Zajicek (work)
18f70a6229 Nest: VRF of protocol can be explicitly specified as 'default'
Protocol can have specified VRF, in such case it is restricted to a set
of ifaces associated with the VRF, otherwise it can use all interfaces.

The patch allows to specify VRF as 'default', in which case it is
restricted to a set of iface not associated with any VRF.
2019-07-24 15:08:03 +02:00
Ondrej Zajicek (work)
048c2f0e8c OSPF: Fix formatting of 'show ospf neighbors'
The formatting was broken when too short router-id was used.
2019-07-23 17:02:41 +02:00
Ondrej Zajicek (work)
15b0a92294 RPKI: Fix reconfiguration when ssh parameters are undefined 2019-07-23 01:52:18 +02:00
Ondrej Zajicek (work)
cf7ff99513 BFD: Support for VRFs
Allow multiple BFD instances in separate VRFs, dispatch BFD requests
according to VRFs.

Thanks to Alexander Zubkov for notice and patches.
2019-07-17 16:20:35 +02:00
Maria Matejka
8263690e75 Merge remote-tracking branch 'origin/master' into mq-filter-stack 2019-07-15 16:07:16 +02:00
Ondrej Zajicek (work)
1aec7112f7 OSPF: Fix handling of NSSA option flags
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.
2019-07-10 18:25:36 +02:00
Maria Matejka
b2a4feeb4c Merge branch 'master' into mq-filter-stack 2019-07-10 11:27:08 +02:00
Ondrej Zajicek (work)
deb84d7989 OSPF: Minor fix in graceful restart
Most LSA origination is blocked in ospf_update_topology(), this fix
blocks LSA origination from ospf_rt_spf().
2019-07-09 15:57:46 +02:00
Ondrej Zajicek (work)
2872ab927e OSPF: Update DR when local priority changes
When priority is reconfigured locally, we need to trigger DR election.

(recommiting, was reset by the previous commit)
2019-07-09 03:48:02 +02:00
Ondrej Zajicek (work)
85840d4c03 OSPF: Fix handling of external routes on graceful restart
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.
2019-07-09 03:39:19 +02:00
Ondrej Zajicek (work)
fa1e0ba354 OSPF: Update DR when local priority changes
When priority is reconfigured locally, we need to trigger DR election.
2019-07-04 13:34:42 +02:00
Maria Matejka
eac9250fd5 Merge branch 'master' into mq-filter-stack 2019-07-03 11:12:25 +02:00
Maria Matejka
78976974e7 Dynamic attributes definition split whether it is bitmask or not. 2019-07-03 00:00:11 +02:00
Maria Jan Matejka
026bfedb33 BGP: Prefix hash is too small, increase its max size.
This doesn't make any change for you until you have
millions of updates waiting to be sent. Increasing
the max hash size from 2^20 to 2^24.
2019-07-01 09:05:54 +02:00
Maria Jan Matejka
9dac814ee8 BGP: split tx explicitly
If BGP has too many data to send and BIRD is slower than the link, TX is
always possible until all data is sent. This patch limits maximum number
of generated BGP messages in one iteration of TX hook.
2019-07-01 09:05:50 +02:00
Ondrej Zajicek (work)
1a2ad348f6 OSPF: Support for graceful restart
Implement OSPFv2 (RFC 3623) and OSPFv3 (RFC 5187) graceful restart,
for both restarting and helper sides. Graceful restart is initiated
by 'graceful down' command.
2019-06-30 21:30:41 +02:00
Ondrej Zajicek (work)
8a68316eb9 Nest: Add command to request graceful restart
When 'graceful down' command is entered, protocols are shut down
with regard to graceful restart. Namely Kernel protocol does
not remove routes and BGP protocol does not send notification,
just closes the connection.
2019-06-30 21:29:24 +02:00
Ondrej Zajicek (work)
d35fb9d732 BGP: Fix bug introduced in one of last patches 2019-06-12 16:37:12 +02:00
Jan Maria Matejka
23e3b1e665 Filter: Some people can't pronounce "postfixify" correctly. Let's try "linearize" instead.
This is just a naming change.
2019-05-22 15:20:02 +00:00
Maria Matejka
9eef9c648c Lexer now returns known sym / unknown sym / keyword 2019-05-17 22:26:21 +02:00
Alexander Azimov
7ff34ca2cb BGP: Compliance with RFC8203bis 2019-04-30 13:55:43 +02:00
Ondrej Zajicek (work)
0b1e1e1a00 BGP: Output Local AS number in show protocol
Useful for implementation of agents implementing the SNMP-BGP MIB, which
requires the local AS of a session to be specified.

Thanks to Jan-Philipp Litza for the patch.
2019-04-30 13:44:11 +02:00
Ondrej Zajicek (work)
e0835db4f1 BGP: Dynamic BGP
Support for dynamically spawning BGP protocols for incoming connections.
Use 'neighbor range' to specify range of valid neighbor addresses, then
incoming connections from these addresses spawn new BGP instances.
2019-04-30 13:32:39 +02:00
Ondrej Zajicek (work)
6ff8119765 OSPFv3: Fix some overlooked cases in IPv4 mode
Prefixes with max length (/32) were not handled properly.

Thanks to bauen1 for the bugreport.
2019-04-12 14:11:23 +02:00
Ondrej Zajicek (work)
4a50c8bd03 BGP: Handle corner cases in event ordering
When BGP connection is opened, it may happen that rx hook (with remote
OPEN) is called before tx hook (for local OPEN). Therefore, we need to do
internal changes (like setting local_caps) synchronously with OPENSENT
transition and we need to ensure that OPEN is sent before KEEPALIVE.
2019-04-08 16:56:56 +02:00
Ondrej Zajicek (work)
23ee6b1cd6 BGP: Promiscuous ASN mode
Allow to specify just 'internal' or 'external' for remote neighbor
instead of specific ASN. In the second case that means BGP peers with
any non-local ASNs are accepted.
2019-04-03 15:54:50 +02:00
Ondrej Zajicek (work)
a22c3e5968 BGP: Separate runtime and config usage of local/remote ip and as fields 2019-04-02 17:22:31 +02:00
Ondrej Zajicek (work)
3c3605818f BGP: Mandatory option for channels
Allow to mark channel to be mandatory, and do not allow BGP sessions if
no common AFI/SAFI is established.
2019-03-19 17:44:50 +01:00
Ondrej Zajicek (work)
7e5f769d91 BGP: Handle case where capabilites are not used
If peer does not announce capabilities at all, or when we have
capabilities disabled, handle that as implicit IPv4 unicast.
2019-03-18 14:29:12 +01:00
Maria Matejka
8d65add626 Merge branch 'master' into HEAD 2019-03-18 12:54:40 +01:00
Maria Matejka
2f02c25e36 Perf: fixed stupid allocation bug 2019-03-15 16:34:26 +01:00
Ondrej Zajicek (work)
875cc073b0 Nest: Update handling of temporary attributes
The temporary atttributes are no longer removed by ea_do_prune(), but
they are undefined by store_tmp_attrs() protocol hooks. This fixes
several bugs where temporary attributes were removed when they should
not or not removed when they should be. The flag EAF_TEMP is no longer
needed and was removed.

Update all protocol make_tmp_attrs() / store_tmp_attrs() hooks to use
helper functions and to handle unset attributes properly.

Also fix some related bugs like improper handling of empty eattr list.
2019-03-14 17:31:40 +01:00
Ondrej Zajicek (work)
9aa77fcceb OSPF: Improved handling of tmpattrs
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.
2019-03-06 18:28:00 +01:00
Maria Matejka
0b39b1cbb7 Conf: Symbol implementation converted from void pointers to union
... and consted some declarations.
2019-02-20 22:30:55 +01:00
Maria Matejka
4f082dfa89 Filter: merged filter instruction constructors, counting line size on instruction construct 2019-02-20 22:30:54 +01:00
Maria Matejka
c0e958e022 Filter + Config: Fix bugs, tests and split symbols by type 2019-02-20 22:30:54 +01:00
Maria Matejka
9b46748d5b Filter: refactoring of instruction constructors 2019-02-20 22:30:54 +01:00
Maria Matejka
4c553c5a5b Filter refactoring: dropped the recursion from the interpreter
This is a major change of how the filters are interpreted. If everything
works how it should, it should not affect you unless you are hacking the
filters themselves.

Anyway, this change should make a huge improvement in the filter performance
as previous benchmarks showed that our major problem lies in the
recursion itself.

There are also some changes in nest and protocols, related mostly to
spreading const declarations throughout the whole BIRD and also to
refactored dynamic attribute definitions. The need of these came up
during the whole work and it is too difficult to split out these
not-so-related changes.
2019-02-20 22:30:54 +01:00
Ondrej Zajicek (work)
bf8d7bba9e OSPF: Reset LSAs during area type change
When area is reconfigured to a different type, we need to flush LSAs as
they may not be valid (e.g. NSSA-LSA for non-NSSA area). Also, when we
have have just one OSPF area and that changes type, we could restart OSPF
as there is no state to keep anyway. That solves issue with different
handling of external routes exported to OSPF based of main area type.
2019-02-17 01:54:01 +01:00
Ondrej Zajicek (work)
4a3f5b3617 OSPF: Basic support for DN-bit handling (RFC 4576)
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.
2019-02-13 15:53:36 +01:00
Ondrej Zajicek (work)
1e958e52d3 OSPF: Do not originate Router-Information LSA
As we do not have much usage for it yet.
2019-02-09 16:15:01 +01:00
Ondrej Zajicek (work)
cd16538fc9 Merge remote-tracking branch 'origin/mq-opt' 2019-02-09 15:53:16 +01:00
Ondrej Zajicek (work)
a9b97cbcb7 OSPF: Send direct acknowledgements as unicast
Direct acknowledgements should be send as unicast to a corresponding
neighbor. Only delayed acks should be send as multicast to all/designated
routers.
2019-02-03 20:22:40 +01:00
Ondrej Zajicek (work)
16605f2fda OSPF: Reject duplicate DBDES packets after dead interval
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.
2019-02-03 17:31:27 +01:00
Ondrej Zajicek (work)
9c94583a3d OSPF: DD seqnum should be initialized only for first attempts
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.
2019-02-03 16:20:37 +01:00
Ondrej Zajicek (work)
267da8138d OSPF: Reject DBDES packets with non-matching MTU
As it is specified in RFC 2328. The old code just provided warning.
2019-02-03 15:45:43 +01:00
Maria Matejka
f9b97f1c62 Perf: Added forgotten all-protocol options 2019-02-01 14:09:01 +01:00
Maria Matejka
e85e37d91d Perf: Prune the table after every loop to have clean state. 2019-01-31 15:05:40 +01:00
Maria Matejka
7411b694c3 Perf: Write also BIRD version to have all the needed data in the logfile 2019-01-31 15:03:43 +01:00
Ondrej Zajicek (work)
1c730ee761 Doc: Remove doc for already removed option 2019-01-26 20:44:37 +01:00
Ondrej Zajicek (work)
b8a3608aa5 BGP: Cleanup channels when going down
When going up, uncleaned old channel state may trigger unexpected
conditions crashing bird.
2019-01-26 19:48:16 +01:00
Ondrej Zajicek (work)
5a50a98980 OSPF: Opaque LSAs and Router Information LSA
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.
2019-01-24 22:45:27 +01:00
Ondrej Zajicek (work)
470740f97b BGP: Better dispatch of incoming connections
Since v2 we have multiple listening BGP sockets, and each BGP protocol
has associated one of them. Use listening socket that accepted the
incoming connection as a key in the dispatch process so only BGP
protocols assocaited with that listening socket can be selected.
This is necesary for proper dispatch when VRFs are used.
2019-01-02 16:01:21 +01:00
Ondrej Zajicek (work)
e16b0aef31 BGP: Postpone setting link_addr
It may happen that the LLv6 address for given iface is not defined during
BGP start, so we postpone the check to the the session establishment.
2019-01-02 15:57:14 +01:00
Maria Matějka
82b742533b Perf: Protocol to measure BIRD performance internally
This protocol is highly experimental and nobody should use it in
production. Anyway it may help you getting some insight into what eats
so much time in filter processing.
2018-12-18 15:08:31 +01:00
Ondrej Zajicek (work)
cea2e25f41 OSPF: Fix wrong LSA collisions detection
In some circumstances (old LSA flushed but not acknowledged and not
removed) origination of a new LSA may wrongly triggers LSA collision
code. The patch fixes that.

Thanks to Asbjorn Mikkelsen for the bugreport and @mdelagueronniere
for the original patch.
2018-12-17 17:01:08 +01:00
Ondrej Zajicek (work)
1cab2b4a7c BGP: Extend 'next hop keep' and 'next hop self' options
Extend 'next hop keep' and 'next hop self' options to have boolean values
(enabled / disabled) and also values 'ibgp'/ 'ebgp' to restrict it to
routes received from IBGP / EBGP. This allows to have it enabled by
default in some cases, matches features of other implementations, and
allows to handle some strange cases like EBGP border router with 'next
hop self' also doing IBGP route reflecting.

Change default of 'next hop keep' to enabled for route servers, and
'ibgp' for route reflectors.

Update documentation for these options.
2018-12-16 23:44:24 +01:00
Ondrej Zajicek (work)
cb311b441a BGP: Better handling of non-matching AFI in nexthops 2018-12-16 15:43:58 +01:00
Ondrej Zajicek (work)
3a2a3c7325 Doc: Rename code documentation files back to Doc 2018-12-14 02:03:42 +01:00
Ondrej Zajicek (work)
532116e7e3 BGP: Do not prepend ASN in export from non-RS EBGP to RS EBGP
When route is exported to regular EBGP, local ASN should be prepended to
AS_PATH. When route is propagated by route server (between RS-marked
EBGP peers), it should not change AS_PATH. Question is what to do in
other cases (from non-RS EBGP, IBGP, or locally originated to RS EBGP).

In 1.6.x, we did not prepend ASN in non-RS EBGP or IBGP to RS EBGP, but
we prepended in local to RS EBGP.

In 2.0.x, we changed that so only RS-EBGP to RS-EBGP is not prepended.
We received some negative responses (thanks to heisenbug and Alexander
Zubkov), we decided to change it back. One reason is that it is simple
to modify the AS_PATH by filters, but not possible to un-modify
changes done by BGP itself. Also, as 1.6.x behavior was not really
consistent, the final behavior is that ASN is never prepended when
exported to RS EBGP, like to IBGP.

Note that i do not express an opinion about whether such configurations
are even reasonable.
2018-12-12 17:36:54 +01:00
Ondrej Zajicek (work)
0f40405fc9 Update RFC references
Progdoc comments do not allow SGML tags
2018-12-12 16:38:30 +01:00
Ondrej Zajicek (work)
682d3f7de0 BGP: implement Adj-RIB-In
The patch implements optional internal import table to a channel and
hooks it to BGP so it can be used as Adj-RIB-In. When enabled, all
received (pre-filtered) routes are stored there and import filters can
be re-evaluated without explicit route refresh. An import table can be
examined using e.g. 'show route import table bgp1.ipv4'.
2018-12-12 14:46:24 +01:00
Ondrej Zajicek (work)
d506263da7 Nest: Forbid adding channels during reconfiguration
When a new channel is found during reconfiguration, do force restart
of the protocol, like with any other un-reconfigurable change.

The old behavior was that the new channel was added but remained in down
state, even if the protocol was up, so a manual protocol restart was
often necessary.

In the future this should be improved such that a reconfigurable
channel addition (e.g. direct) is accepted and channel is started,
while an un-reconfigurable addition forces protocol restart.
2018-12-11 17:57:14 +01:00
Ondrej Zajicek (work)
baeacdcfd3 OSPF: Fix reconfiguration of vlinks
Fix crash during reconfiguration of OSPF config with vlinks. When vlink
is reconfigured, a generic iface-reconfiguration code is used, which in
one place supposes that it is running on a regular iface.

Thanks to Cybertinus for a bugreport.
2018-12-10 02:15:06 +01:00
Jan Maria Matejka
14375237f6 Terminology cleanup: The import_control hook is now called preexport.
Once upon a time, far far away, there were the old Bird developers
discussing what direction of route flow shall be called import and
export. They decided to say "import to protocol" and "export to table"
when speaking about a protocol. When speaking about a table, they
spoke about "importing to table" and "exporting to protocol".

The latter terminology was adopted in configuration, then also the
bird CLI in commit ea2ae6dd0 started to use it (in year 2009). Now
it's 2018 and the terminology is the latter. Import is from protocol to
table, export is from table to protocol. Anyway, there was still an
import_control hook which executed right before route export.

One thing is funny. There are two commits in April 1999 with just two
minutes between them. The older announces the final settlement
on config terminology, the newer uses the other definition. Let's see
their commit messages as the git-log tool shows them (the newer first):

    commit 9e0e485e50
    Author: Martin Mares <mj@ucw.cz>
    Date:   Mon Apr 5 20:17:59 1999 +0000

	Added some new protocol hooks (look at the comments for better explanation):

		make_tmp_attrs          Convert inline attributes to ea_list
		store_tmp_attrs         Convert ea_list to inline attributes
		import_control          Pre-import decisions

    commit 5056c559c4
    Author: Martin Mares <mj@ucw.cz>
    Date:   Mon Apr 5 20:15:31 1999 +0000

	Changed syntax of attaching filters to protocols to hopefully the final
	version:

		EXPORT <filter-spec>    for outbound routes (i.e., those announced
					by BIRD to the rest of the world).
		IMPORT <filter-spec>    for inbound routes (i.e., those imported
					by BIRD from the rest of the world).

	where <filter-spec> is one of:

		ALL                     pass all routes
		NONE                    drop all routes
		FILTER <name>           use named filter
		FILTER { <filter> }     use explicitly defined filter

	For all protocols, the default is IMPORT ALL, EXPORT NONE. This includes
	the kernel protocol, so that you need to add EXPORT ALL to get the previous
	configuration of kernel syncer (as usually, see doc/bird.conf.example for
	a bird.conf example :)).

Let's say RIP to this almost 19-years-old inconsistency. For now, if you
import a route, it is always from protocol to table. If you export a
route, it is always from table to protocol.

And they lived happily ever after.
2018-12-04 10:53:01 +01:00
Ondrej Zajicek (work)
e2ae08694e Nest: Do not hard-reset interface when preferred address is changed
Modify protocols to use preferred address change notification instead on
depending on hard-reset of interfaces in that case, and remove hard-reset
in that case. This avoids issue when e.g. IPv6 protocol restarts
interface when IPv4 preferred address changed (as hard-reset is
unavoidable and common for whole iface).

The patch also fixes a bug when removing last address does not send
preferred address change notification.
2018-11-28 16:55:32 +01:00
Ondrej Zajicek (work)
863ecfc785 The MRT protocol
The new MRT protocol is responsible for periodic RIB table dumps in the
MRT format (RFC 6396). Also the existing code for BGP4MP MRT dumps is
refactored and splitted between BGP to MRT protocols, will be more
integrated into MRT in the future.

Example:

protocol mrt {
        table "*";
        filename "%N_%F_%T.mrt";
        period 60;
}

It is partially based on the old MRT code from Pavel Tvrdik.
2018-11-20 17:45:35 +01:00
Ondrej Zajicek (work)
e19d08055a BGP: Fix VRF for listening socket
Listening socket should be bound to specified interface and VRF.

Thanks to Alexander Zubkov for the bugreport.
2018-10-26 19:11:33 +02:00
Ondrej Zajicek (work)
0ac9cb2c1f OSPF: Fix some trace messages
Missing argument in MTU change trace message can crash bird when MTU
change happens and trace messages are active.

Thanks to Alexander Velkov for the bugreport.
2018-10-25 17:22:37 +02:00
Ondrej Zajicek (work)
961671c0f5 Lib: Add and use ev_new_init() 2018-10-01 15:55:23 +02:00
Ondrej Zajicek (work)
0db7a1d69c BGP: Fix bug in show protocol related to LLGR
When channel is not active due to not be negotiated during sessino
establishment, the LLGR timer is not allocated, so we should not show it.
2018-10-01 15:35:43 +02:00
Jan Maria Matejka
d4cebc6bbe No more warnings ...
no more warnings
No more warnings over me
And while it is being compiled all the log is black and white
Release BIRD now and then let it flee

(use the melody of well-known Oh Freedom!)
2018-09-18 14:21:11 +02:00
Ondrej Zajicek (work)
5bd734317c BGP: Long-lived graceful restart
The patch implements long-lived graceful restart for BGP, namely
draft-uttaro-idr-bgp-persistence-03.
2018-07-31 18:40:38 +02:00
Ondrej Zajicek (work)
0ed3129f6b RAdv: Fix crash during prefix change
Thanks to Julian Schuh for the bugreport.
2018-07-19 20:54:55 +02:00
Ondrej Zajicek (work)
8bd718b3ba OSPF: Fix crash during route removal
The bug was introduced by an earler patch which removed additional eattr
argument to rt_notify hook.
2018-07-19 20:48:13 +02:00
Ondrej Zajicek (work)
7b9b0c0a00 Cleanup some warnings 2018-07-03 18:08:35 +02:00
Ondrej Zajicek (work)
8e86ffce82 BGP: Use implicit-NULL label when announcing MPLS routes with local next-hop
We currently cannot assing local labels, but we can still be LSP egress
router. Therefore when we announce labeled route with local next-hop, we
should announce implicit-NULL label instead of rejecting it completely.
2018-07-01 01:03:16 +02:00
Ondrej Zajicek (work)
93c1defdb0 BGP: Fix parsing of MPLS withdrawals
RFC 3107 was bit vague with regard to labeled withdrawals, RFC 8277
clarified that. The old code was incompatible with some implementations,
namely with Juniper.

Thanks to Vadim Fedorenko for the original patch.
2018-07-01 00:43:24 +02:00
Maria Jan Matejka
daf113ac66 BGP: Attribute set function merged with its common counterpart 2018-06-29 17:26:28 +02:00
Ondrej Zajicek (work)
586c1800c4 Nest: Neighbor cache cleanups
Simplify neighbor cache code, fix several minor bugs, and improve
handling of ONLINK flag.
2018-06-27 16:57:07 +02:00
Maria Matejka
c2fc4c10ac Doc: renamed progdoc files Doc -> progdoc to fix collision with doc/ folder on case-insensitive filesystems 2018-06-26 17:09:12 +02:00
Jan Maria Matejka
f851f0d7e3 Config: Dropping CF_ADDTO. 2018-06-26 14:29:03 +02:00
Jan Maria Matejka
1ef23f05ee Merge branch 'int-new' into HEAD 2018-06-19 14:32:16 +02:00
Ondrej Zajicek (work)
caa9d03d65 Babel: Fix handling of missing IPv4 next hops
In case of missing IPv4 next hop, we should skip such routes
on transmit and ignore such routes on receive.

Thanks to Julian Schuh for the bugreport and Toke Hoiland-Jorgensen
for the original patch.
2018-06-13 15:22:29 +02:00
Ondrej Zajicek (work)
9c9050ff12 BGP: Handle missing NEXT_HOP attribute properly
RFC 7606 specifies handle-as-withdraw instead of session reset.
2018-06-13 14:47:37 +02:00
Jan Maria Matejka
13c0be19d3 Nest: Removing separate tmpa from route propagation
This is a fundamental change of an original (1999) concept of route
processing inside BIRD. During import/export, there was a temporary
ea_list created which was to be used instead of the another one inside
the route itself.

This led to some confusion, quirks, and strange filter code that handled
extended route attributes. Dropping it now.

The protocol interface has changed in an uniform way -- the
`struct ea_list *attrs` argument has been removed from store_tmp_attrs(),
import_control(), rt_notify() and get_route_info().
2018-05-30 17:08:49 +02:00
Ondrej Zajicek (work)
18b4f2082c OSPF: Fix invalid NSSA RFC references 2018-05-29 14:23:14 +02:00
Jan Maria Matejka
ee7e2ffd26 Protocol: Introducing an enum protocol_class
This supersedes the EAP_* constants.
2018-05-29 12:35:06 +02:00
Ondrej Zajicek (work)
feae132e0f Do not initialize route metrics in import_control hook
During route export, the receiving protocol often initialized route
metrics to default value in its import_control hook before export filter
was executed. This is inconsistent with the expectation that an export
filter would process the same route as one in the routing table and it
breaks setting these metrics before (e.g. for static routes directly in
static protocol).

The patch removes the initialization of route metrics in import_control
hook, the default values are already handled in rt_notify hook called
after export filters.

The patch also changed the behavior of OSPF to keep metrics when a route
is reannounced between OSPF instances (to be consistent with other
protocols) and the behavior when both ospf_metric1 and ospf_metric2
are specified (to have more expected behavior).
2018-05-24 14:51:05 +02:00
Ondrej Zajicek (work)
70fab17837 Babel: Add option to randomize router ID
When a Babel node restarts, it loses its sequence number, which can cause
its routes to be rejected by peers until the state is cleared out by other
nodes in the network (which can take on the order of minutes).

There are two ways to fix this: Having stable storage to keep the sequence
number across restarts, or picking a different router ID each time.

This implements the latter, by introducing a new option that will cause
BIRD to randomize a high 32 bits of router ID every time it starts up.
This avoids the problem at the cost of not having stable router IDs in
the network.

Thanks to Toke Hoiland-Jorgensen for the patch.
2018-05-03 16:55:11 +02:00
Ondrej Zajicek (work)
23b079043b Babel: Fix type of route entry router ID
The router ID being assigned to routes was a uint, which discards the
upper 32 bits. This also has the nice side effect of echoing the wrong
router ID back to other routers.

Thanks to Toke Hoiland-Jorgensen for the patch.
2018-05-03 16:02:29 +02:00
Ondrej Zajicek (work)
4727d1db9d OSPF: Support of authentication trailer for OSPFv3
Implement RFC 7166, crypthographic authentication for OSPFv3
analogous to authentication used for OSPFv2.
2018-04-25 15:54:53 +02:00
Ondrej Zajicek (work)
f3a8cf050e BGP: Fix extended next hop handling
For IPv4 with extended next hop, we use MP-BGP format and therefore no
independent NEXT_HOP attribute.

Thanks to Arvin Gan for the bugreport.
2018-04-12 16:55:56 +02:00
Ondrej Zajicek (work)
d0f47327f8 Merge branch 'master' into int-new 2018-03-07 17:41:49 +01:00