Commit graph

3313 commits

Author SHA1 Message Date
Jan Maria Matejka
906092534b Macro: Added a bunch of dirty C preprocessor tricks
Included are Makefile implicit rules to show the preprocessed source.
When debugging something around this, it may be handy.
2018-05-29 11:53:51 +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)
b24b781117 Filter: Add support for src filter op to access SADR source prefix
The patch allows to use 'net.src' to access SADR source prefix
from filters.

Thanks to Toke Hoiland-Jorgensen for the original patch for srclen.
2018-05-16 11:19:29 +02:00
Ondrej Zajicek (work)
eaf63d314d Better initialization of random generator
Use full time precision to initialize random generator. The old
code was prone to initialize it to the same values in specific
circumstances (boot without RTC, multiple VMs starting at once).
2018-05-03 17:07:39 +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
Jan Maria Matejka
29958745c8 Makefile: Only set git version if BIRD is build from its repository.
Thanks to Toke Høiland-Jørgensen <toke@toke.dk> for reporting this bug.
2018-05-03 11:14:49 +02:00
Jan Maria Matejka
823ad12191 Filter: Added missing instruction comparators.
These instructions caused SIGABORTs on reconfiguration.
2018-04-27 14:38:41 +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)
c408d807a3 Doc: Documentation for BGP disable after cease option 2018-04-03 17:31:45 +02:00
Ondrej Zajicek (work)
a63d20aa87 Doc: Documentation for BGP extended next hop feature
Thanks to Arvin Gan for the bugreport.
2018-04-03 16:53:58 +02:00
Ondrej Zajicek (work)
157f6c2aad Doc: Remove some superfluous slashes 2018-03-24 02:05:47 +01:00
Ondrej Filip
6807320a0f Autoconf replaced by autoreconf 2018-03-23 17:24:58 +01:00
Ondrej Filip
4d3d34f599 Date added. 2018-03-22 13:30:10 +01:00
Ondrej Filip
966602602a Merge branch 'int-new' of ssh://gitlab.labs.nic.cz/labs/bird into int-new 2018-03-22 13:25:58 +01:00
Ondrej Zajicek (work)
4841804fff NEWS and version update 2018-03-21 16:33:08 +01:00
Ondrej Zajicek (work)
a177e4dd04 Doc: Minor update 2018-03-21 16:33:08 +01:00
Ondrej Zajicek (work)
3b522a1e5c Doc: Redesign default config file
The old one does not work with 2.0.x.
2018-03-20 19:28:26 +01:00
Ondrej Zajicek (work)
89ac4dd3c4 Merge remote-tracking branch 'birdlab-tmp/int-new' into int-new 2018-03-19 13:29:39 +01:00
Ondrej Zajicek (work)
bcb4af81fc Nest: Fix table reconfiguration when nettype changes
Thanks to Toke Hoiland-Jorgensen for the bugreport.
2018-03-18 13:48:47 +01:00
Ondrej Zajicek (work)
364d5823ea Nest: SADR support for Direct 2018-03-18 02:56:51 +01:00
Ondrej Zajicek (work)
159d619caf Doc: SADR documentation 2018-03-17 22:25:06 +01:00
Ondrej Zajicek (work)
7a8ae228f9 Doc: Update BGP documentation
Thanks to Joshua McQuistan for the bugreport.
2018-03-17 17:14:38 +01:00
Jan Maria Matejka
8a871e890a Merge branch 'master' into int-new 2018-03-14 12:57:16 +01:00
Jan Maria Matejka
e8bc64e308 Filter: make bgpmask literals real constructors
The bgpmask literals can include expressions. This is OK but they have
to be interpreted as soon as the code is run, not in the time the code
is used as value.

This led to strange behavior like rewriting bgpmasks when they shan't
be rewritten:

	function mask_generator(int as)
	{
		return [= * as * =];
	}

	function another()
	bgpmask m1;
	bgpmask m2;
	{
		m1 = mask_generator(10);
		m2 = mask_generator(20);
		if (m1 == m2) {
			print("strange"); # this would happen
		}
	}

Moreover, sending this to CLI would cause stack overflow and knock down the
whole BIRD, as soon as there is at least one route to execute the given
filter on.

	show route filter bgpmask mmm; bgppath ppp; { ppp = +empty+; mmm = [= (ppp ~ mmm) =]; print(mmm); accept; }

The magic match operator (~) inside the bgpmask literal would try to
resolve mmm, which points to the same bgpmask so it would resolve
itself, call the magic match operator and vice versa.

After this patch, the bgpmask literal will get resolved as soon as it's
assigned to mmm and it also will return a type error as bool is not
convertible to ASN in BIRD.
2018-03-14 11:34:29 +01:00
Jan Maria Matejka
e95705f00c Merge branch 'master' into int-new 2018-03-13 17:02:49 +01:00
Jan Maria Matejka
74bfd2f97c Filters: Removed FI_COMMA, not used for 19 years.
This instruction was removed in the commit linked below
and never used ever again. Rest in peace.

commit 84c7e1943f
Author: Pavel Machek <pavel@ucw.cz>
Date:   Tue Mar 2 19:49:28 1999 +0000
2018-03-13 17:01:37 +01:00
Jan Maria Matejka
d1ba927b36 Merge branch 'master' into int-new 2018-03-13 16:51:04 +01:00
Jan Maria Matejka
7c601e6b7b Filter: recursion to loop
It was supposed to do tail-recursion in interpret() but it didn't
compile as such. Converting it to loop makes a significant filter
performance improvement for flat filters.
2018-03-13 16:29:33 +01:00
Maria Jan Matejka
5a14df3950 Filter: Instruction codes named as enum
The two-letter instructions were quite messy but they could be easily
read from memory dumps. Now GDB (since 2012) supports pretty printing
enum values and GCC checks the switch construction for missing enum
values so we are converting the nice two-byte values to enums.

Anyway, the enum still keeps the old two-byte values to be able to read
the instruction codes even without GDB from plain memory dump.
2018-03-13 16:29:33 +01:00
Jan Maria Matejka
f2f5a7d945 Filter: the test conf checks also a bit of BGP args
Uncommented an old test.
2018-03-08 12:57:39 +01:00
Jan Maria Matejka
0575c7db72 Config: Dropped the ipv4:netmask4 syntax for IPv4 prefixes. 2018-03-08 12:57:39 +01:00
Ondrej Zajicek (work)
d0f47327f8 Merge branch 'master' into int-new 2018-03-07 17:41:49 +01:00
Ondrej Zajicek (work)
2d6d4b8053 Babel: Fix build with restricted protocol set
All keywords used in Babel config have to be declared locally.

Thanks to Leo Vandewoestijne for the bugreport.
2018-03-07 17:35:24 +01:00
Ondrej Filip
4406281260 Merge branch 'int-new' of ssh://gitlab.labs.nic.cz/labs/bird into int-new 2018-02-27 06:08:03 +01:00
Ondrej Zajicek (work)
1561ee799c Handle properly enums for extended attributes 2018-02-13 19:52:22 +01:00
Ondrej Zajicek (work)
d5144ea9bf Add cscope Makefile target
For those who prefer cscope to etags

Thanks to Toke Hoiland-Jorgensen for the patch.
2018-02-13 17:00:24 +01:00
Ondrej Zajicek (work)
5ce7adfcf9 Babel: Fix accidental bitwise or assignment
Fix an accidental bitwise or assignment that was supposed to be a
comparison.

Thanks to Toke Hoiland-Jorgensen for the patch.
2018-02-13 16:42:03 +01:00
Ondrej Zajicek (work)
185a0a51f8 Babel: Add source-specific routing support
This patch adds support for source-specific routing to the Babel protocol.
It changes the protocol to support both NET_IP6 and NET_IP6_SADR channels
for IPv6 addresses. If only a NET_IP6 channel is configured,
source-specific updates are ignored. Otherwise, non-source-specific
routes are simply treated as source-specific routes with SADR prefix 0.

Thanks to Toke Hoiland-Jorgensen for the original patch.
Minor changes by Ondrej Santiago Zajicek.
2018-02-13 16:40:14 +01:00
Ondrej Zajicek (work)
be17805c0b Add support for source-specific IPv6 routes to BIRD core
This patch adds support for source-specific IPv6 routes to BIRD core.
This is based on Dean Luga's original patch, with the review comments
addressed. SADR support is added to network address parsing in confbase.Y
and to the kernel protocol on Linux.

Currently there is no way to mix source-specific and non-source-specific
routes (i.e., SADR tables cannot be connected to non-SADR tables).

Thanks to Toke Hoiland-Jorgensen for the original patch.
Minor changes by Ondrej Santiago Zajicek.
2018-02-13 16:39:07 +01:00
Ondrej Zajicek (work)
a82f692e58 Nest: Trivial whitespace cleanup 2018-02-07 17:12:33 +01:00
Ondrej Zajicek (work)
28b3b55122 KRT: Fix IPv6 route learn
Internal table used for route learn was created with non-matching net
type for IPv6 kernel proto.

Thanks to Toke Hoiland-Jorgensen for the bugreport
2018-02-06 16:08:45 +01:00
Ondrej Zajicek (work)
85ad5855a0 Nest: Fix corner case in recursive next hop lookup
Thanks to Svenne Krap for the bugreport.
2018-01-29 12:49:37 +01:00
Ondrej Zajicek (work)
345e50d59f Nest: remove duplicate function 2018-01-24 13:55:12 +01:00
Ondrej Zajicek (work)
75d98b6013 Merge branch 'master' into int-new 2018-01-23 18:29:32 +01:00
Ondrej Zajicek (work)
d6cf996151 IO: Fix socket priority
On Linux, setting the ToS will also set the priority and the range of
accepted values is quite limited (masked by 0x1e). Therefore, 0xc0 is
translated to a priority of 0, not something we want, overriding the
"7" priority which was set previously explicitely. To avoid that, just
move setting priority later in the code.

Thanks to Vincent Bernat for the patch.
2018-01-23 17:05:45 +01:00
Ondrej Zajicek (work)
ace3072e09 KRT: Fix option 'merge paths' 2018-01-23 15:12:43 +01:00
Ondrej Zajicek (work)
e5ff7929c4 KRT: Remove useless option 2018-01-23 14:48:07 +01:00
Ondrej Zajicek (work)
def6efa1ef Doc: Fix example 2018-01-23 14:26:18 +01:00