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09d99617d3
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Author SHA1 Message Date
Maria Matejka
09d99617d3 Table feeds are now lockless 
This commit makes the route chains in the tables atomic. This allows not
only standard exports but also feeds and bulk exports to be processed
without ever locking the table.

Design note: the overall data structures are quite brittle. We're using
RCU read-locks to keep track about readers, and we're indicating ongoing
work on the data structures by prepending a REF_OBSOLETE sentinel node
to make every reader go waiting.

All the operations are intended to stay inside nest/rt-table.c and it
may be even best to further refactor the code to hide the routing table
internal structure inside there. Nobody shall definitely write any
routines manipulating live routes in tables from outside.
 2024-05-17 09:12:51 +02:00
Maria Matejka
40061ac3ac Fixed flush condition when stale cycle valid/set indicators wrap around 2024-05-17 09:12:51 +02:00
Maria Matejka
3685b0f9b6 BGP: Fixed corking of RX 
If cork occurred after some incoming data had been already processed,
BGP incorrectly processed them again after uncorking because it forgot
to store the actual socket state.

Now storing the socket state (done at the end of bgp_rx()) and
therefore the bug is fixed.
 2024-05-17 09:12:51 +02:00
Maria Matejka
c8342aecbf Fixed in-table route refresh counter to not randomly add 256 2024-05-17 09:12:51 +02:00
Maria Matejka
a95773bc1b Fixed hostcache notifier pool 
This pool has to be the service pool to allow the seq bitmaps to grow
from the exporter and feeder routines
 2024-05-17 09:12:51 +02:00
Maria Matejka
51e5b705e1 Fixed announcement inconsistency between feeds and regular exports 2024-05-13 08:52:49 +02:00
Maria Matejka
047f45e698 Kernel: replaced synchronous prune by a refeed 2024-05-13 08:52:48 +02:00
Maria Matejka
cf4c91a07e Fixed best route announcements after NHU 
When more routes in one net changed at once, the best route
announcements were inconsistent which confused exporters.
 2024-05-13 08:52:48 +02:00
Maria Matejka
4fc6d75e88 Fixed reporting about exported routes 2024-05-13 08:52:48 +02:00
Maria Matejka
068b1520d4 Lockless hostentry resolution 
Now the hostentry doesn't need to lock table, instead it tracks the
hostentry version and retries if the hostentry changed while updating.
 2024-05-13 08:52:48 +02:00
Maria Matejka
75f2369589 Fixed annoying undefined values with nexthops 2024-05-13 08:52:48 +02:00
Maria Matejka
3fa23c3b53 Cached route attributes now have explicitly marked layers 
Also the rta_* functions renamed to ea_* functions
 2024-05-13 08:52:48 +02:00
Maria Matejka
178ea41e84 IO Loop: provide information about current loop and task time limit 2024-05-13 08:52:48 +02:00
Maria Matejka
5ba5cdd9f9 Locking: forcefully unwinding locks to a previously stored state 2024-05-13 08:52:48 +02:00
Maria Matejka
d1652138ca Netindex: Dropping tmp handle mechanism in favor of deferred lfuc_unlock 2024-05-13 08:52:48 +02:00
Maria Matejka
a0df74780a Fixed all implicit seq_cst warnings caused by the previous commit 2024-05-13 08:52:48 +02:00
Maria Matejka
6a82c6b90c Enabling warnings for implicit seq_cst in atomic access 2024-05-13 08:52:48 +02:00
Maria Matejka
23bad456cb IO loop: fixed local hot page cache flushing condition 2024-05-13 08:52:48 +02:00
Maria Matejka
a3daf69cd1 lib/printf_test.c: test on strcmp fixed 
we mistakenly required the return value to be only -1, 0 or 1
 2024-05-13 08:52:48 +02:00
Maria Matejka
a0a592e673 Doc: short migration info for BIRD 2 -> 3 2024-04-06 18:28:43 +02:00
Maria Matejka
bb35c4f9dc Route flag REF_OBSOLETE 
Marking routes obsolete when being removed from table, just to be sure.
 2024-04-06 18:28:43 +02:00
Maria Matejka
b6853989ac Bitops: bitflip function 
to flip order of bits in 32b numbers
 2024-04-06 18:28:43 +02:00
Maria Matejka
27f2fd4aa9 Removed the obsolete birdloop flagger 
This was useful when events were locking. As now sending events is lockless,
we can drop this obsolete routine for good.
 2024-04-06 18:28:43 +02:00
Maria Matejka
8527bb6bf3 Simplified table deletion (one less step) 2024-04-06 18:28:43 +02:00
Maria Matejka
cacf743dcb Hostentry usecount converted to lfuc 2024-04-06 18:28:43 +02:00
Maria Matejka
622d406087 Lockfree usecount: deferring unlocks to the metaloop 
This allows us for easy temporary locks without additional burden of explicit cleanup.
 2024-04-06 18:28:43 +02:00
Maria Matejka
422ecddaae Allowing to send events to the metaloop's priority list 2024-04-06 18:28:43 +02:00
Maria Matejka
b114aa0073 Static: Unlock IGP tables on cleanup to avoid problems with hostentry unlocking 2024-04-06 18:28:43 +02:00
Maria Matejka
233004988b Net: explicit generic-to-specific typecast with checking 2024-04-06 18:28:43 +02:00
Maria Matejka
0dd6ec566d Route table export journal converted to the generic structure 2024-04-06 18:28:43 +02:00
Maria Matejka
a5eb8e0f9f Lock free journal refactored into a separate data structure 2024-04-06 18:28:43 +02:00
Maria Matejka
d020cc7e26 Event: fixed race condition between ev_send and ev_postpone 2024-04-06 18:28:43 +02:00
Maria Matejka
d1c337f235 Replacing the NHU table loop flag with a proper event 2024-04-06 18:28:43 +02:00
Maria Matejka
6bc1490f30 Undefined behavior fix 2024-04-03 13:58:41 +02:00
Maria Matejka
84c8f24241 CLang compilation fix 2024-04-03 13:58:41 +02:00
Maria Matejka
ec5d9d49ab Flowspec links don't peruse the all-hooks list for lookup 2024-04-03 13:58:41 +02:00
Maria Matejka
76e43b405f Typed list: macro for list length 2024-04-03 13:58:41 +02:00
Maria Matejka
59304b2f91 Typed lists: enabled defining the list structure independently on the node 2024-03-27 14:28:37 +01:00
Maria Matejka
d516cea44a Refactoring: back-merged export data structures 
Table-specific structures inheriting commons are too crazy.
 2024-03-27 14:28:37 +01:00
Maria Matejka
721f09a78d Export table dump temporarily switched off 2024-03-27 14:28:37 +01:00
Maria Matejka
facc9197c9 Added and explicit target table to the ROA subscription object 2024-02-08 14:34:54 +01:00
Maria Matejka
83b92a355d Refactoring of struct rt_pending_export 
Now it stores const rte * instead of struct rte_storage * to allow for
different storage backends.
 2024-02-08 09:20:40 +01:00
Maria Matejka
3b217f2984 Fixed L3VPN after merge to v3. 
Semantics of rt_get_source() has changed between v2 and v3. Also other
minor fixes were needed to make it run.
 2024-01-30 23:14:10 +01:00
Maria Matejka
06030d8bf0 Hostentry eattrs are now properly zeroed 2024-01-30 23:14:10 +01:00
Maria Matejka
95adf7b0fa Fixed regression in route feeding. 
We were, once again, forgetting to mark empty-net journal entries as
processed, as was fixed in 32bb548c11.

Introduced in 548dbb2252.
Caught by cf-ebgp-graceful.
 2024-01-30 21:31:13 +01:00
Maria Matejka
000dbf737c Temporarily disabling L3VPN netlab test, has no data for v3 2024-01-29 22:59:57 +01:00
Maria Matejka
29e7cd4a7c Showing MPLS labels in hostentry display 2024-01-29 22:12:38 +01:00
Maria Matejka
058984bc86 BGP: fixed MPLS setting in nexthops 
bug introduced somewhere during conversion of nexthops to eattrs
 2024-01-29 22:12:38 +01:00
Maria Matejka
2e5cf618ef Hack-fix of IPv6 SADR literal parsing 
This should be probably once done better, not by ad-hoc disabling
the attribute symbol table when parsing SADR literals.
 2024-01-28 23:37:08 +01:00
Maria Matejka
a0041dd236 Merge commit '472be46f7ab211f38e7662543f1436df30dca753' into thread-next 2024-01-28 23:09:54 +01:00