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Also fixed forgotten best route selection among alien routes.
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This is a reimplementation of commit 0f2be469f897b6d9f925563bbf522438c83522ea
by Alexander Zubkov. In the master branch, changes in commit eb937358
broke setting of channel preference for alien routes learned during
scan. The preference was set only for async routes.
The original solution is extended here to accomodate for v3 specifics.
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It was necessary to update the code to match removal of rta, as well as
existence of cached nested attribute lists.
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Had to fix route source locking inside BGP export table as we need to
keep the route sources properly allocated until even last BGP pending
update is sent out, therefore the export table printout is accurate.
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Replacing the old 3.0-alpha0 cork mechanism with another one inside the
routing table. This version should be simpler and also quite clear what
it does, why and when.
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This reverts commit 445eeaf3df126af2c7b61e71c4f08a583eb4fa60.
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This reverts commit 3b20722a1fc777c27ab2e0451d0ea3fee7fa81a2.
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These routines detect the export congestion (as defined by configurable
thresholds) and propagate the state to readers. There are no readers for
now, they will be added in following commits.
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Some unit tests weren't initializing the birdloop, trying to write the
birdloop ping into stdin. Fixed this and also forced stdin close on
startup of every test just to be sure that CI and local build behave the
same in this. (CI was failing on this while local build not.)
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This reverts commit 6e841b3153565632b6753f6b1fe74850c37f2808.
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Remove compile-time sysdep option CONFIG_ALL_TABLES_AT_ONCE, replace it
with runtime ability to run either separate table scans or shared scan.
On Linux, use separate table scans by default when the netlink socket
option NETLINK_GET_STRICT_CHK is available, but retreat to shared scan
when it fails.
Running separate table scans has advantages where some routing tables are
managed independently, e.g. when multiple routing daemons are running on
the same machine, as kernel routing table modification performance is
significantly reduced when the table is modified while it is being
scanned.
Thanks Daniel Gröber for the original patch and Toke Høiland-Jørgensen
for suggestions.
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This reverts commit cee0cd148c9b71bf47d007c850193b5fbf9486c1.
This change is not needed in version 2 and the surrounding code has
disappeared mostly in version 3.
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In multithreaded environment, we need to pass messages between workers.
This is done by queuing events to their respective queues. The
double-linked list is not really useful for that as it needs locking
everywhere.
This commit rewrites the event subsystem to use a single-linked list
where events are enqueued by a single atomic instruction and the queue
is processed after atomically moving the whole queue aside.
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There were more conflicts that I'd like to see, most notably in route
export. If a bisect identifies this commit with something related, it
may be simply true that this commit introduces that bug. Let's hope it
doesn't happen.
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The invalid routes were filtered out before they could ever get
exported, yet some of the routines need them available, e.g. for
display or import reload.
Now the invalid routes are properly exported and dropped in channel
export routines instead.
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Introduced by 13ef5e53dd4a98c80261139b4c9ce4b1074cac40, the CLI was not
properly cleaned up when the command finished, causing BIRD to not parse
any other command after "show route".
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Add support for bgp_otc in filters and warning for configuration
inside confederations.
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This reverts commit 44f26c49f966ca842ff9af55468de0b98c44b73e.
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For BGP LLGR purposes, there was an API allowing a protocol to directly
modify their stale routes in table before flushing them. This API was
called by the table prune routine which violates the future locking
requirements.
Instead of this, BGP now requests a special route export and reimports
these routes into the table, allowing for asynchronous execution without
locking the table on export.
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