0
0
mirror of https://gitlab.nic.cz/labs/bird.git synced 2024-09-19 20:05:21 +00:00
Commit Graph

4054 Commits

Author SHA1 Message Date
Maria Matejka
b20b6a9ad2 BGP/BMP: Moved temporary allocation checks to the freeing functions 2023-10-11 22:23:34 +02:00
Maria Matejka
2ed9b2d769 Merge branch 'mq-bmp-to-merge-to-v3' into HEAD 2023-10-10 15:05:50 +02:00
Ondrej Zajicek
2d988f71a5 Nest: Use generic rte_announce() also for import tables
Remove special rte_announce_in(), so we can use generic rte_announce()
for bot feed and notifications.
2023-10-10 15:04:17 +02:00
Ondrej Zajicek
6e908775cb Conf: Improve handling of keywords
For whatever reason, parser allocated a symbol for every parsed keyword
in each scope. That wasted time and memory. The effect is worsened with
recent changes allowing local scopes, so keywords often promote soft
scopes (with no symbols) to real scopes.

Do not allocate a symbol for a keyword. Take care of keywords that could
be promoted to symbols (kw_sym) and do it explicitly.
2023-10-10 14:28:01 +02:00
Ondrej Zajicek
6b2c9b7c66 Conf: Fix symbol lookup
The symbol table used just symbol name as a key, and used a trick with
active flag to find symbols in active scopes with one hash table lookup.

The disadvantage is that it can degenerate to O(n) for negative queries
in situations where are many symbols with the same name in different
scopes.

Thanks to Yanko Kaneti for the bugreport.
2023-10-10 14:27:36 +02:00
Ondrej Zajicek
4558adabfb BMP: Improve peer_down handling
Move all bmp_peer_down() calls to one place and make it synchronous with
BGP session down, ensuring that BMP receives peer_down before route
withdraws from flushing.

Also refactor bmp_peer_down_() message generating code.
2023-08-22 01:26:06 +02:00
Ondrej Zajicek
52641e0866 BMP: Use generic channel feed instead of direct walk over rtable
Now we use rt_notify() and channels for both feed and notifications,
in both import tables (pre-policy) and regular tables (post-policy).

Remove direct walk in bmp_route_monitor_snapshot().
2023-08-21 04:24:15 +02:00
Ondrej Zajicek
ef6ab5ce86 Nest: Use generic rte_announce() also for import tables
Remove special rte_announce_in(), so we can use generic rte_announce()
for bot feed and notifications.
2023-08-21 04:17:21 +02:00
Ondrej Zajicek
c40f29a790 BMP: Fix route timestamps 2023-08-18 15:39:08 +02:00
Ondrej Zajicek
f4deef89be BMP: Refactor route monitoring
- Manage BMP state through bmp_peer, bmp_stream, bmp_table structures
 - Use channels and rt_notify() hook for route announcements
 - Add support for post-policy monitoring
 - Send End-of-RIB even when there is no routes
 - Remove rte_update_in_notify() hook from import tables
 - Update import tables to support channels
 - Add bmp_hack (no feed / no flush) flag to channels
2023-08-18 03:53:58 +02:00
Ondrej Zajicek
aec21cda24 BMP: Remove useless buffer 2023-08-01 18:39:38 +02:00
Ondrej Zajicek
8ded8baba2 BMP: Simplify route monitoring hooks
No need for *_begin(), *_commit(), and *_end() hooks. The hook *_notify()
is sufficient for everything.
2023-08-01 18:38:02 +02:00
Ondrej Zajicek
43d41d8449 BMP: Ensure that bmp_fire_tx() does nothing when not up 2023-06-08 05:10:05 +02:00
Ondrej Zajicek
e8838d930c BMP: Support multiple instances of BMP protocol
Add internal BMP functions with plicit bmp_proto *p as first argument,
which allows using TRACE() macro. Keep list of BMP instances and call
internal functions. Old BMP functions are wrappers that call internal
functions for all enabled BMP instances.

Extract End-of-RIB mark into separate function.

Based on patch from Michal Zagorski <mzagorsk@akamai.com>. Thanks!
2023-06-08 05:03:15 +02:00
Ondrej Zajicek
0799fc99ab BMP: Fix bug in buffer resize
The buffer code in bmp_buffer_grow(), reuse the MRT buffer handling code.

Based on comments by Michal Zagorski <mzagorsk@akamai.com>, Thanks!
2023-05-31 18:42:14 +02:00
Ondrej Zajicek
e8be7a7080 BMP: Proper reconfiguration and protocol status
Based on patches from Michal Zagorski <mzagorsk@akamai.com> co-authored
with Pawel Maslanka <pmaslank@akamai.com>. Thanks!
2023-05-31 17:41:53 +02:00
Ondrej Zajicek
1e45e2aa4e BMP: Add station address check
Also, do not initialize it to IPA_NONE4, use regular IPA_NONE.
2023-05-30 17:23:56 +02:00
Michal Zagorski
62d8fbdc1c BMP: Add local address option
Also remove unused local and ip_post_policy options.

Co-authored with Pawel Maslanka <pmaslank@akamai.com>.

Minor changes by committer.
2023-05-30 17:09:25 +02:00
Ondrej Zajicek
ae4d934c53 BMP: Minor formatting cleanups
Based on patches from Michal Zagorski <mzagorsk@akamai.com> co-authored
with Pawel Maslanka <pmaslank@akamai.com>. Thanks!
2023-05-30 16:23:07 +02:00
Ondrej Zajicek
c1821a9aba BGP: Improve bgp_create_update_bmp()
Fix issue with missing AF cap (e.g. IPv4 unicast when no capabilities
are announced).

Add Linpool save/restore action similar to bgp_create_update().

Based on patch from Michal Zagorski <mzagorsk@akamai.com> co-authored
with Pawel Maslanka <pmaslank@akamai.com>. Thanks!
2023-05-30 15:37:52 +02:00
Ondrej Zajicek
aa3c35498d BMP: Use OPEN messages stored in BGP
The BMP protocol needs OPEN messages of established BGP sessions to
construct appropriate Peer Up messages. Instead of saving them internally
we use OPEN messages stored in BGP instances. This allows BMP instances
to be restarted or enabled later.

Because of this change, we can simplify BMP data structures. No need to
keep track of BGP sessions when we are not started. We have to iterate
over all (established) BGP sessions when the BMP session is established.
This is just a scaffolding now, but some kind of iteration would be
necessary anyway.

Also, the commit cleans up handling of msg/msg_length arguments to be
body/body_length consistently in both rx/tx and peer_up/peer_down calls.
2023-05-01 04:01:16 +02:00
Ondrej Zajicek
1be0be1b71 BGP: Save sent and received OPEN messages
These are necessary for BMP Peer UP message and it is better to keep them
in BGP than in BMP (so BMP could be restarted or added later).
2023-05-01 04:01:16 +02:00
Ondrej Zajicek
a8a64ca0fe Conf: Improve handling of keywords
For whatever reason, parser allocated a symbol for every parsed keyword
in each scope. That wasted time and memory. The effect is worsened with
recent changes allowing local scopes, so keywords often promote soft
scopes (with no symbols) to real scopes.

Do not allocate a symbol for a keyword. Take care of keywords that could
be promoted to symbols (kw_sym) and do it explicitly.
2023-04-27 18:41:01 +02:00
Ondrej Zajicek
9b471e72d7 Conf: Fix symbol lookup
The symbol table used just symbol name as a key, and used a trick with
active flag to find symbols in active scopes with one hash table lookup.

The disadvantage is that it can degenerate to O(n) for negative queries
in situations where are many symbols with the same name in different
scopes.

Thanks to Yanko Kaneti for the bugreport.
2023-04-27 17:09:00 +02:00
Ondrej Zajicek
ca0f239c72 NEWS and version update 2023-04-21 20:26:47 +02:00
Ondrej Zajicek
1a1e13cc2f Filter: Disable some trie formatting tests
Trie formatting works slightly different with 4-way tries than with
16-way ones, so these tests generated false error. Block them for now.
2023-04-21 19:31:16 +02:00
Ondrej Zajicek
52450bc96d Merge branch 'bmp' 2023-04-21 04:47:55 +02:00
Ondrej Zajicek
f3b599afe5 BMP: Add some basic documentation 2023-04-21 04:42:13 +02:00
Luiz Amaral
d61505b039 BSD: IPv4 over IPv6 nexthop support on FreeBSD
The support for IPv4 routes with IPv6 nexthops was implemented in FreeBSD
13.1, this patch allows to import and export such routes from/to kernel.

Minor change from committer.
2023-04-21 02:03:31 +02:00
Maria Matejka
335409248e Linpool: Fix lp_restore()
When lp_save() is called on an empty linpool, then some allocation is
done, then lp_restore() is called, the linpool is restored but the used
chunks are inaccessible. Fix it.
2023-04-20 19:33:00 +02:00
Ondrej Zajicek
976dec048a BMP: Silence some log messages
Hooks called from BGP to BMP should not log warning when BMP is not
connected, that is not an error (and we do not want to flood logs with
a ton of messages).

Blocked sk_send() should not log warning, that is expected situation.
Error during sk_send() is handled in error hook anyway.
2023-04-20 17:14:45 +02:00
Ondrej Zajicek
2c7d2141ac BMP: Fix connection management
Replace broken TCP connection management with a simple state machine.
Handle failed attempts properly with a timeout, detect and handle TCP
connection close and try to reconnect after that. Remove useless
'station_connected' flag.

Keep open messages saved even after the BMP session establishment,
so they can be used after BMP session flaps.

Use proper log messages for session events.
2023-04-20 16:28:07 +02:00
Ondrej Zajicek
010df43519 BMP: Fix reconfiguration
It is not supported, but at least it must update internal config
pointer to not keep old one.
2023-04-18 18:57:54 +02:00
Ondrej Zajicek
02164814b4 BMP: Allow build without BMP and disable BMP build by default
It has still several important issues to be enabled by default.
2023-04-18 17:21:13 +02:00
Ondrej Zajicek
fbeef4b74d BMP: Move initialization to bmp_start()
That fixes BMP socket allocation from an invalid pool.
2023-04-18 15:13:24 +02:00
Ondrej Zajicek
04e3a76c94 BMP: Fix missing template
It is mandatory for protocol.
2023-04-18 15:09:21 +02:00
Ondrej Zajicek (work)
3925e65938 BMP: Add some missing bmp_buffer_free() calls
They were inadvertently removed during recent code refactoring.

Thanks to Dawid Macek for the bugreport and patch.
2023-04-16 20:06:02 +02:00
Ondrej Zajicek (work)
4d56b70dc5 BMP: Remove duplicate functions for update encoding
Use existing BGP functions also for BMP update encoding.
2023-04-16 20:06:00 +02:00
Ondrej Zajicek (work)
568fd66613 BMP: Integrate bmp_conn to bmp_proto
There is only one socket per BMP instance, no need to have separate
struct (like in BGP).
2023-04-16 20:05:17 +02:00
Ondrej Zajicek (work)
4adebdf198 BMP: Minor cleanups
Remove redundant 'disable' option, simplify IP address serialization,
and remove useless macros.
2023-04-16 20:05:17 +02:00
Ondrej Zajicek (work)
a995ed4386 BMP: Do not use global instance ptr internally
Use local variable to refence relevant instance instead of using global
instance ptr. Also, use 'p' variable instead of 'bmp' so we can use
common macros like TRACE().
2023-04-16 20:05:17 +02:00
Ondrej Zajicek (work)
ad16e35177 BMP: Remove superfluous error handling
Most error handling code was was for cases that cannot happen,
or they would be code bugs (and should use ASSERT()). Keep error
handling for just for I/O errors, like in rest of BIRD.
2023-04-16 20:05:17 +02:00
Pawel Maslanka
a848dad40a BMP protocol support
Initial implementation of a basic subset of the BMP (BGP Monitoring
Protocol, RFC 7854) from Akamai team. Submitted for further review
and improvement.
2023-04-16 20:05:15 +02:00
Trisha Biswas
9e44ace392 BGP: Add 'allow bgp_med' option for EBGP sessions
This option allows to treat bgp_med as regular transitive attribute
on EBGP sessions (without hacks in filters).

Minor changes from committer.
2023-04-14 04:28:37 +02:00
Jakub Ružička
dc139fb643 Increase tests timeout
Tests may take longer than 5 s to complete on slow/virtual machines.
2023-04-13 20:06:55 +02:00
Ondrej Zajicek
f881b98d9b BGP: Fix bgp_med handling
Missing translation from BGP attribute ID to eattr ID in bgp_unset_attr()
broke automatic removal of bgp_med during export to EBGP peers.

Thanks to Edward Sun for the bugreport.
2023-04-04 05:20:49 +02:00
Johannes Moos
231c63851e Add missing references to "show route in" in the cli-help and doc.
The feature of showing all prefixes inside the given one has been added
in v2.0.9 but not well documented. Fixing it by this update.

Text in doc and commit message added by commiter.
2023-03-18 15:36:05 +01:00
Maria Matejka
2b712554d1 BGP: Free bind applies also to outbound connections
Even though the free bind option is primarily meant to alleviate problems
with addresses assigned too late, it's also possible to use BIRD with AnyIP
configuration, assigning whole ranges to the machine. Therefore free bind
allows also to create an outbound connection from specific address even though
such address is not assigned.
2023-03-16 19:23:33 +01:00
Ondrej Zajicek
6b38285f58 Net: Replace runtime checks with STATIC_ASSERT() 2023-03-06 11:57:40 +01:00
Petr Vaněk
0f679438f3 Printf test suite fails on systems with musl libc because tests for "%m"
and "%M" formats expect "Input/output error" message but musl returns
"I/O error". Proposed change compares the printf output with string
returned from strerror function for EIO constant.

See-also: https://bugs.gentoo.org/836713

Minor change from committer.
2023-03-06 11:33:27 +01:00