Commit graph

3628 commits

Author SHA1 Message Date
Ondrej Zajicek (work)
c1632ad0f3 OSPF: Fix handling of unnumbered PtPs
This issue has a long history. In 2012, we changed data field for
unnumbered PtP links from iface id (specified by RFC) to IP address based
on reports of bugs in Quagga that required it, and we used out-of-band
information to distinquish unnumberred PtPs with the same local IP
address.

Then with OSPF graceful restart implementation, we found that we can no
longer use out-of-band information, and we need to use only LSAdb info
for routing table calculation, but i forgot to finish handling of this
case, so multiple unnumbered PtPs with the same local IP addresses were
broken.

Considering that even recent Mikrotik RouterOS has broken next hop
calculation that depends on IP address in PtP link data field, we
cannot just switch back to the iface id for unnumbered PtP links.

The patch makes two changes: First, it goes back to use out-of-band
(position) info for distinguishing local interfaces in SPF when graceful
restart is not enabled, while still uses LSAdb-only approach for SPF
calculation when graceful restart is enabled.

Second, it adds OSPF interface option 'ptp address', which controls
whether IP address or iface id is used in data field. It is enabled
by default except for unnumbered PtP links with enabled graceful
restart.

Thanks to Kenth Eriksson for the bugreport and Joakim Tjernlund for
suggestions.
2020-05-26 18:21:43 +02:00
Ondrej Zajicek (work)
1ca7665fa4 Nest: Allow key id 0
There is nothing in RFCs specifying that id 0 is not allowed. Some
implementations does not support it, while some other use key id 0 by
default. We allow it but start with key id 1 by default.

Thanks to Kenth Eriksson for the bugreport.
2020-05-19 02:50:47 +02:00
Ondrej Zajicek (work)
b729e731f9 RIP: Triggered RIP (demand circuit) documentation 2020-05-19 02:42:22 +02:00
Ondrej Zajicek (work)
ec430a7fee Nest: Implement BGP path mask loop operator
Implement regex-like '+' operator in BGP path masks to match previous
path mask item multiple times. This is useful as ASNs may appear
multiple times in paths due to path prepending for traffic engineering
purposes.
2020-05-18 16:25:08 +02:00
Ondrej Zajicek (work)
5fc8407177 RIP: Fix handling of passive mode for demand circuit interfaces 2020-05-12 03:46:47 +02:00
Ondrej Zajicek (work)
b8bbbbaf56 Nest: Fix neighbor handling for colliding ranges
Resolve neighbors using longest prefix match. Although interface ranges
should not generally collide, it may happen for unnumbered links.

Thanks to Kenth Eriksson for the bugreport.
2020-05-11 04:29:36 +02:00
Ondrej Zajicek (work)
f7c34aa227 Tests: Activate BGP-int test 2020-05-05 02:20:30 +02:00
Matous Holinka
e6785c469b Tests: Change unsupported Ubuntu 19.04 for supported version 19.10 2020-05-05 02:16:28 +02:00
Ondrej Zajicek (work)
82bfee76f0 Filter: Remove quitbird command
No need for this debug filter command and it can be abused from CLI.
2020-05-02 02:47:18 +02:00
Maria Matejka
b12442c985 Fixed a harmless warning in production build 2020-05-01 15:41:42 +02:00
Maria Matejka
048eb2ddf1 Merge remote-tracking branch 'origin/mq-static-analysis' 2020-05-01 15:34:17 +02:00
Maria Matejka
59238768b3 Slab: Init node in slab head to NULLs. 2020-05-01 15:19:12 +02:00
Maria Matejka
ea259d6201 Timer: Adding missing initializer. 2020-05-01 15:19:12 +02:00
Maria Matejka
0c3b8ffe25 Lexer: strtoul shall never set endptr to NULL; it should be an error 2020-05-01 15:19:12 +02:00
Maria Matejka
cdde3550dc Unix socket: Path length check directly before copying the path.
This is not needed as the string is always short enough, anyway
it may be needed in future and one strlen during BIRD start is
cheap enough.
2020-05-01 15:19:12 +02:00
Maria Matejka
9ac13d7af2 Lists: Replaced replace_node() by update_node() which is the only use of that function. 2020-05-01 15:19:12 +02:00
Maria Matejka
e26a5195dd Lists: fix a stupid sanitizer bug 2020-05-01 15:19:12 +02:00
Maria Matejka
3bb10b4d31 Uninitialized list nodes fixes 2020-05-01 15:19:12 +02:00
Maria Matejka
258be56539 Nest: Added const to ea_show just to declare that this shouldn't really change anything 2020-05-01 15:19:12 +02:00
Maria Matejka
a7d9b8f116 OSPF: Zero-initialization of a temporary neighbor 2020-05-01 15:19:12 +02:00
Maria Matejka
0fa8bf91cd Nest: Several assumptions to tame the static analyzer 2020-05-01 15:19:12 +02:00
Maria Matejka
bbe49ae569 Nest: Assumption in rt-show for not-so-intuitive invariant. 2020-05-01 15:19:12 +02:00
Maria Matejka
a08853a269 Static scanner and expensive debugging setup fix 2020-05-01 15:19:12 +02:00
Maria Matejka
5f60d14ede RPKI: fixed rare va_list leak 2020-05-01 15:19:12 +02:00
Maria Matejka
b748220906 Static check: Don't report dead code 2020-05-01 15:19:12 +02:00
Maria Matejka
9e64ac4b7c OSPF: Adding a note about a static analyzer result. 2020-05-01 15:19:12 +02:00
Maria Matejka
dccee40826 OSPF: variable-length array of size 0 replaced by alloca()'d pointer
NULL pointer is safer than a random pointer onto stack if this function
gets changed and eventually broken.
2020-05-01 15:19:12 +02:00
Maria Matejka
baac700906 List expensive check. 2020-05-01 15:19:12 +02:00
Maria Matejka
a0d0a71a18 Expensive check declaration
Intended to be run at every operation with complex data structures
to check their consistency and validity.
2020-05-01 15:19:12 +02:00
Maria Matejka
a1b61a271a IPv6 address parser: fail on incomplete addresses 2020-05-01 15:19:12 +02:00
Maria Matejka
d65a926a67 Filter: Don't alloc varargs array if its length would be zero 2020-05-01 15:19:12 +02:00
Maria Matejka
30ba7c1661 Filter: Removed forgotten dead code 2020-05-01 15:19:12 +02:00
Maria Matejka
bf9486bf20 Non-null function argument declaration 2020-05-01 15:18:48 +02:00
Ondrej Zajicek (work)
17de3a023f BGP: Fix handling of strange IPv6 link-local-only next hops
There are three common ways how to encode IPv6 link-local-only next hops:
(:: ll), (ll), and (ll ll). We use the first one but we should accept all
three. The patch fixes handling of the last one.

Thanks to Sebastian Hahn for the bugreport.
2020-04-29 02:50:29 +02:00
Maria Matejka
8029ae527e More assertion categories 2020-04-28 16:21:06 +02:00
Maria Matejka
d607205486 Not calling memcpy with n=0. 2020-04-28 16:21:06 +02:00
Maria Matejka
124d860f64 Filter: fixed omitted overflow check in EC constructor 2020-04-28 16:21:06 +02:00
Maria Matejka
59a86cbc7c Makefile rule for static analyzer 2020-04-28 16:21:06 +02:00
Ondrej Zajicek (work)
b465604eb1 Tests: Activate BGP-auth test 2020-04-28 15:26:26 +02:00
Ondrej Zajicek (work)
716e11a584 Tests: Activate OSPF-VRF test 2020-04-28 03:52:47 +02:00
Ondrej Zajicek (work)
3c838ad9fd Tests: Activate BGP test 2020-04-22 17:14:02 +02:00
Nasato Goto
a6548d5b5b BGP: Fix handling of 16bit-only ASN translation
The bug generated invalid AGGREGATOR attribute during translation of
32bit ASN to 16bit-only BGP peer. The patch fixes that.
2020-04-15 03:46:53 +02:00
Maria Matejka
fd9f0c0640 Configuration strings are constant.
This is merely a const propagation. There was no problem in there.
2020-04-09 15:37:14 +02:00
Ondrej Zajicek (work)
a109056145 Doc: Update prefix set comment 2020-04-08 13:11:51 +02:00
Maria Matejka
2928c5bcc7 Fletcher16 test fixed to work at bigendian architectures.
To be honest, it was wrong in concept, anyway it accidentally worked.
2020-04-05 01:15:26 +02:00
Ondrej Zajicek (work)
c9d11e6230 Filter: Remove mixed address tests and fix formatting 2020-03-26 04:59:15 +01:00
Ondrej Zajicek (work)
2755002890 Filter: Optimize IPv4 prefix sets
Use separate IPv4 and IPv6 implementation of prefix sets. Just this
change makes IPv4 prefix sets 60% smaller and 50% faster.
2020-03-26 03:57:48 +01:00
Ondrej Zajicek (work)
d516c68ad8 RIP: Improvements to demand circuit mode
Restart iface after changing demand circuit mode during reconfiguration.
Fix next_regular interval reset during reconfiguration. Send flushing
response when iface goes down.
2020-03-14 17:04:49 +01:00
Maria Matejka
dc042d87cb Perf: changed route update pattern to be more like common protocols 2020-03-12 09:26:05 +01:00
Ondrej Zajicek (work)
e2630a494e Netlink: Handle interfaces with missing broadcast addresses 2020-03-07 05:11:21 +01:00