Commit graph

1449 commits

Author SHA1 Message Date
Ondrej Zajicek (work)
eb1e43a9af BGP: Fix setup with multiple dynamic BGP ranges
Based on a patch from Liam Nattrass, thanks.
2019-09-17 14:45:14 +02:00
Ondrej Zajicek (work)
1127887a8b BGP: Fix handling of bgp_aggregator atttribute
The attribute should not be modifiable by filters as we do not
support its type.
2019-09-09 13:17:30 +02:00
Ondrej Zajicek (work)
8388f5a7e1 BGP: Fix bugs in handling of shutdown messages
There is an improper check for valid message size, which may lead to
stack overflow and buffer leaks to log when a large message is received.

Thanks to Daniel McCarney for bugreport and analysis.
2019-09-09 03:13:35 +02:00
Ondrej Zajicek (work)
56d8b1e7f6 OSPF: Fix 'show ospf lsadb' cmd without proto arg
It crashed when used without protocol argument.

Thanks to Alexander for the bugreport.
2019-08-29 20:58:16 +02:00
Ondrej Zajicek (work)
4fa0e472cf BGP: Use reallocation for capability structure
Instead of having large stack buffer for max amount of AFI/SAFI pairs.
The old code is not correct w.r.t. extendeded option length, as more
AFI/SAFI pairs may fit into the capability option.
2019-08-21 17:16:08 +02:00
Ondrej Zajicek (work)
524d253853 BGP: Implement extended optional parameters length
Extends BGP options/capabilities data length to 16bit, to avoid issues
with too many capabilities. See draft-ietf-idr-ext-opt-param-07
2019-08-20 19:15:50 +02:00
Ondrej Zajicek (work)
b7d7599ce3 BGP: implement Adj-RIB-Out
The patch implements optional internal export table to a channel and
hooks it to BGP so it can be used as Adj-RIB-Out. When enabled, all
exported (post-filtered) routes are stored there. An export table can be
examined using e.g. 'show route export table bgp1.ipv4'.
2019-08-14 06:02:33 +02:00
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