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Commit Graph

2871 Commits

Author SHA1 Message Date
Ondrej Zajicek (work)
c3cff8423e BGP: Long-lived graceful restart
The patch implements long-lived graceful restart for BGP, namely
draft-uttaro-idr-bgp-persistence-03.
2018-06-04 18:56:05 +02:00
Ondrej Zajicek (work)
4c0b741ba7 Doc: Remove some superfluous slashes 2018-03-24 01:53:03 +01:00
Ondrej Zajicek (work)
f99c61b1f4 Doc: Be consistent in generating pdf output 2018-03-24 01:34:58 +01:00
Ondrej Filip
2ee6a89a8d Autoconf replaced by autoreconf 2018-03-23 17:22:55 +01:00
Ondrej Filip
f77fb3f00e Date added. 2018-03-22 13:33:12 +01:00
Ondrej Zajicek (work)
a71a75213d NEWS and version update 2018-03-21 16:26:39 +01:00
Ondrej Zajicek (work)
4dff1f32b5 Doc: Minor build fix 2018-03-21 16:26:39 +01:00
Ondrej Zajicek (work)
97b1b04d93 C99 loop declarations not allowed in 1.6.x 2018-03-19 19:51:11 +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
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
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
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 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)
63472779ad BGP: Implement 'disable after cease' option
The option allows to specify that some cease subcodes should
disable the protocol when received.
2018-01-16 19:17:04 +01:00
Ondrej Zajicek (work)
b940579115 Filter: Allow silent filter execution
A filter should log messages only if executed explicitly (e.g., during
route export or route import). When a filter is executed for technical
reasons (e.g., to establish whether a route was exported before), it
should run silently.
2018-01-16 16:20:01 +01:00
Ondrej Zajicek (work)
0ff86d054e ROA: Fix reconfiguration 2018-01-03 14:12:00 +01:00
Ondrej Zajicek (work)
cce6ba4daa Remove libhistory check
According to GNU Readline developers, if we link with libreadline then
there is no need to link with libhistory at all.
2018-01-02 14:11:59 +01:00
Ondrej Zajicek (work)
8396094156 Minor cleanups 2017-12-14 22:15:01 +01:00
Ondrej Zajicek (work)
1e8721e2ae Babel: Parse flags in Hello TLV
RFC6126bis introduces a flags field for the Hello TLV, and adds a unicast flag
that is used to signify that a hello was sent as unicast. This adds parsing of
the flags field and ignores such unicast hellos, which preserves compatibility
until we can add a proper implementation of the unicast hello mechanism.

Thanks to Toke Hoiland-Jorgensen for the patch.
2017-11-28 19:33:33 +01:00
Jan Maria Matejka
9ba4b4a63d Filter test: typo fix 2017-11-09 15:04:05 +01:00
Ondrej Zajicek (work)
d9573a40ec Doc: Update sgml2* tools
The old ones do not work on current Debian.
2017-10-10 15:06:39 +02:00
Ondrej Zajicek (work)
7e8d6116df Doc: Fix reference 2017-10-10 14:40:22 +02:00
Michal 'vorner' Vaner
18352188ed RAdv: Documentation for more specific routes 2017-10-10 14:40:22 +02:00
Ondrej Zajicek (work)
7c0bab3a39 RAdv: Change specific route options to be per-interface
And change default values of specific route options to be consistent with
values of default router options.
2017-10-06 12:24:37 +02:00
Michal 'vorner' Vaner
2a95e63343 RAdv: Support for more specific routes (RFC 4191)
The patch implements Default Router Preferences and More-Specific Routes
(RFC 4191) for RAdv protocol, allowing to announce router preference and
more specific routes in router advertisements. Routes can be exported to
RAdv like to regular routing protocols.

Some cleanups, bugfixes and other changes done by Ondrej Zajicek.
2017-10-04 16:27:02 +02:00
Michal 'vorner' Vaner
5a8b1fb047 filter: Allow assigning enums into extended attributes
They are internally ints, but they got refused as a wrong type. This
fixes setting of the BGP origin and is also needed for RA.
2017-09-20 15:36:54 +02:00
Ondrej Zajicek (work)
cd1d99611e BGP: Shutdown communication (RFC 8203)
The patch implements BGP Administrative Shutdown Communication (RFC 8203)
allowing BGP operators to pass messages related to BGP session
administrative shutdown/restart. It handles both transmit and receive of
shutdown messages. Messages are logged and may be displayed by show
protocol all command.

Thanks to Job Snijders for the basic patch.
2017-09-19 19:57:52 +02:00
Michal 'vorner' Vaner
7b2c5f3d28 Docs: FIB iteration macros 2017-09-19 12:59:41 +02:00
Ondrej Zajicek (work)
18ea2ea759 Doc: Document 'empty' operator
Thanks to Alexander Zubkov for the notification.
2017-09-13 13:10:50 +02:00
Ondrej Zajicek (work)
f2dd602fef Backport some minor changes from int-new 2017-09-12 16:33:29 +02:00
Ondrej Zajicek (work)
9f4908fe78 Nest: VRF support for neighbor cache and olock code
Actually much simpler than expected.
2017-09-12 15:49:36 +02:00
Ondrej Zajicek (work)
943478b00f Basic VRF support
Add basic VRF (virtual routing and forwarding) support. Protocols can be
associated with VRFs, such protocols will be restricted to interfaces
assigned to the VRF (as reported by Linux kernel) and will use sockets
bound to the VRF. E.g., different multihop BGP instances can use diffent
kernel routing tables to handle BGP TCP connections.

The VRF support is preliminary, currently there are several limitations:

- Recent Linux kernels (4.11) do not handle correctly sockets bound
to interaces that are part of VRF, so most protocols other than multihop
BGP do not work. This will be fixed by future kernel versions.

- Neighbor cache ignores VRFs. Breaks config with the same prefix on
local interfaces in different VRFs. Not much problem as single hop
protocols do not work anyways.

- Olock code ignores VRFs. Breaks config with multiple BGP peers with the
same IP address in different VRFs.

- Incoming BGP connections are not dispatched according to VRFs.
Breaks config with multiple BGP peers with the same IP address in
different VRFs. Perhaps we would need some kernel API to read VRF of
incoming connection? Or probably use multiple listening sockets in
int-new branch.

- We should handle master VRF interface up/down events and perhaps
disable associated protocols when VRF goes down. Or at least disable
associated interfaces.

- Also we should check if the master iface is really VRF iface and
not some other kind of master iface.

- BFD session request dispatch should be aware of VRFs.

- Perhaps kernel protocol should read default kernel table ID from VRF
iface so it is not necessary to configure it.

- Perhaps we should have per-VRF default table.
2017-09-06 17:38:48 +02:00
Ondrej Zajicek (work)
98bb80a243 KRT: Fix IPv6 ECMP handling with Linux 4.11+
Starting from Linux 4.11, IPv6 ECMP routes are now notified using
RTA_MULTIPATH, like IPv4 ones. The patch adds support for RTA_MULTIPATH
parsing for IPv6 routes. This also enables to parse ECMP alien routes
correctly.

Thanks to Vincent Bernat for the original patch.
2017-09-05 00:02:20 +02:00
Ondrej Zajicek (work)
9befc7cc4f BSD: Fix alignment issue
Incorrect structure alignment breaks kernel routing table updates on
FreeBSD/ARM (and perhaps other platforms).

Thanks to Eugene Sevastyanov for the original patch.
2017-09-04 22:32:45 +02:00
Michal 'vorner' Vaner
96eace1ea7
Merge branch 'gitlab-ci' 2017-09-04 13:30:13 +02:00
Michal 'vorner' Vaner
5c4dfe0c30
Gitlab CI support
Add configuration and docker definitions for tests and builds in Gitlab
CI platform.

Some of them currently fail, which is a known problem.
2017-09-04 11:25:51 +02:00
Ondrej Zajicek (work)
08b6a617e8 RAdv: Some style nitpicks 2017-08-30 16:34:15 +02:00
Michal 'vorner' Vaner
ec7d6a506e RAdv: Configure how long a dead prefix is advertised 2017-08-30 16:34:15 +02:00
Michal 'vorner' Vaner
e2d2b3ef21 RAdv: Buffer prefixes awhile after they disappear
Keep a cache of all the relevant prefixes we send out. When a prefix
appears, insert it into the cache. If it dies, keep it there for a
while, marked as dead.

Send out the dead prefixes with zero lifetime.
2017-08-30 16:34:15 +02:00
Michal 'vorner' Vaner
3ac5d1ce4c RAdv: Extract prefix option preparation
Put the prefix option preparation into a separate function. We're going
to reuse that bit of code.
2017-08-30 16:34:15 +02:00
Ondrej Zajicek (work)
e7ed9ecba7 Client: Fix include 2017-08-22 14:03:38 +02:00
Michal 'vorner' Vaner
080d9e4ce2
Nicer log output
non-primary is ugly, just omit it (and use primary in the other case).
2017-08-10 14:35:14 +02:00
Michal 'vorner' Vaner
5699a2036c
Less confusing log message
A non-primary address isn't necessarily secondary, that's an independent
flag.
2017-08-10 13:06:05 +02:00
Michal 'vorner' Vaner
9b776458ef
Gitignore: File created by autoreconf 2017-08-09 13:39:20 +02:00
Michal 'vorner' Vaner
da390bb11c
Drop stale TODO
A TODO file last updated 5 years ago is useless.
2017-08-09 13:35:55 +02:00
Ondrej Zajicek (work)
b3fae3a817 RAdv: Fix typo 2017-08-09 12:41:44 +02:00
Michal 'vorner' Vaner
1f182675c8 RAdv: Style updates
Adapt the naming conventions to be a bit closer to the other protocols.

proto_radv -> radv_proto
struct radv_proto *ra -> struct radv_proto *p
struct proto *p -> struct proto *P
2017-08-09 12:38:20 +02:00
Michal 'vorner' Vaner
637ed49868 radv: Fix RFC reference in comments 2017-08-09 11:59:36 +02:00
Ondrej Zajicek (work)
e46128fb50 Filters: Do not clamp EC set values to 16 bit for EC_GENERICs
Thanks to Lennert Buytenhek <buytenh@wantstofly.org> for the patch.
2017-06-19 12:46:40 +02:00