Commit graph

380 commits

Author SHA1 Message Date
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)
3a2a3c7325 Doc: Rename code documentation files back to Doc 2018-12-14 02:03:42 +01:00
Maria Matejka
265419a369 Custom route attributes
For local route marking purposes, local custom route attributes may be
defined. These attributes are seamlessly stripped after export filter to
every real protocol like Kernel, BGP or OSPF, they however pass through
pipes. We currently allow at most 256 custom attributes.

This should be much faster than currently used bgp communities
for marking routes.
2018-12-06 09:55:21 +01:00
Ondrej Zajicek (work)
f2d8e6801e Filter: Make ifname attribute modifiable
Allow to change an interface associated with a route by setting
ifname attribute. It will also change the route to a direct one.
2018-11-05 22:03:21 +01:00
Ondrej Zajicek (work)
83715aa829 Filter: Add support for VPN_RD sets 2018-10-25 11:26:58 +02:00
Ondrej Zajicek (work)
41b83e52f7 Filter: Fix minor bug in accessing bgp_path
Not relevant for regular BGP paths, just for BGP paths added by filters
to e.g. static routes.
2018-10-25 11:23:15 +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
1771f70d74 Filter: fixed eattr cached pointer
Use ACCESS_RTE to guard **f_rte, use ACCESS_EATTRS to guard **f_eattrs.
Use f_rta_cow() before writing to rta or eattrs, use f_rte_cow() before
writing preference (stored in rte).

Do not access eattrs indirectly through (*f_rte)->attrs->eattrs, it is
way too slow. The cached pointer is faster.
2018-06-19 16:51:40 +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
Jan Maria Matejka
ee7e2ffd26 Protocol: Introducing an enum protocol_class
This supersedes the EAP_* constants.
2018-05-29 12:35:06 +02:00
Jan Maria Matejka
c3becfe193 Filter: macro for recursive interpretation of instructions 2018-05-29 12:35:06 +02:00
Jan Maria Matejka
0ec6b5ecd3 Filter: Simple type checks converted to ARG() macro 2018-05-29 12:35:06 +02:00
Jan Maria Matejka
478f9babed Filter: Removing the third argument hack
Just to make the code a bit more clean and easier to maintain.
2018-05-29 11:53:51 +02:00
Jan Maria Matejka
cff9e937fd Filter: instruction names 2018-05-29 11:53:51 +02:00
Jan Maria Matejka
31d6939cde Filter: Instruction codes linearized 2018-05-29 11:53:51 +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
Jan Maria Matejka
823ad12191 Filter: Added missing instruction comparators.
These instructions caused SIGABORTs on reconfiguration.
2018-04-27 14:38:41 +02:00
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)
1561ee799c Handle properly enums for extended attributes 2018-02-13 19:52:22 +01:00
Ondrej Zajicek (work)
75d98b6013 Merge branch 'master' into int-new 2018-01-23 18:29:32 +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)
3831b61966 BGP: Require explicit import and export policies for EBGP channels
To comply with RFC 8212 requirements.
2018-01-16 04:14:49 +01:00
Ondrej Zajicek (work)
8f8671bcde Filter: Handle undefined BGP paths as empty
The same is already done for clists. Also fixes defined() to work
properly for paths and clists.
2018-01-03 15:44:05 +01:00
Ondrej Zajicek (work)
ed1d853e51 Filter: Remove old BGP path mask syntax from tests 2017-12-08 17:31:33 +01:00
Jan Maria Matejka
3e52d112d7 Docs: Update to v2.0 2017-12-08 16:27:19 +01:00
Ondrej Zajicek (work)
830ba75e6d Merge commit '1e8721e2aeccfbc3f533e8b8abc07582cee77e9a' into int-new 2017-12-07 21:54:47 +01:00
Jan Maria Matejka
9ba4b4a63d Filter test: typo fix 2017-11-09 15:04:05 +01:00
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)
69f7399247 Merge branch 'master' into int-new 2017-08-09 12:46:27 +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
Ondrej Zajicek (work)
6aaaa63519 Change parser to handle numbers as unsigned
Lexer always parsed numbers as unsigned, but parser handled them as
signed and grammar contained many unnecessary checks for negativity.
2017-05-23 17:40:19 +02:00
Jan Moskyto Matejka
05d47bd53e Linpool: default allocation size 2017-05-16 15:34:57 +02:00
Ondrej Zajicek (work)
751fb2366c Test: Fix broken test for filters 2017-04-26 14:11:28 +02:00
Jan Moskyto Matejka
69fddac052 Merge branch 'int-new' of gitlab.labs.nic.cz:labs/bird into int-new 2017-04-26 12:30:22 +02:00
Jan Moskyto Matejka
2af807a83f Test: fixed broken test for VPN RD output 2017-04-26 12:19:39 +02:00
Ondrej Zajicek (work)
6f535924eb Filter: Fix reconfiguration of roa_check() 2017-04-18 13:56:51 +02:00
Jan Moskyto Matejka
61e501da89 Filter: Check whether IP is 4 or 6 2017-03-22 14:53:37 +01:00
Ondrej Zajicek (work)
a5d2a34497 Minor cleanups
BTW, 'prefices' is hypercorrection, as 'prefix' is from 'praefixum' with
plural 'praefixa'.
2017-03-14 17:25:42 +01:00
Jan Moskyto Matejka
8c9986d310 Filters: VPN Route Distinguishers, Prefix Type, Docs Update 2017-03-13 13:51:20 +01:00