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Allow to explicitly configure the source IP address for RPKI-To-Router
sessions. Predictable source addresses are useful for minimizing the
holes to be poked in ACLs.
Changed from 'source address' to 'local address' by committer.
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BGP route attributes have flags (Optional, Transitive) that are validated
on decode and set to valid value on export. But if such attribute is
modified by filter or set internally by BGP during import, then its flags
would be zero in local tables. That usually does not matter, as they are
not used locally and they were fixed on export, but invalid flags leaked
in BMP and MRT dumps.
Keep route attribute flags set to valid values even when set by filters
or modified by BGP.
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IANA registered an "Early Allocation" BGP Error code for 'Send Hold
Timer Expired' event. Update BIRD to use that error code.
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Allow to define both nexthop and interface using iproute2-like syntax,
e.g.: route 10.0.0.0/16 via 10.1.0.1 dev "eth0";
Now we can avoid to use link-local scope hack (e.g. 10.1.0.1%eth0)
for cases where both nexthop and interface have to be defined.
Thanks to Marcin Saklak for the suggestion.
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BIRD route attribute for RTAX_SSTHRESH metric was krt_sstresh instead of
krt_ssthresh. Fix that and keep old name as an depreacted alias.
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- Add krt_fastopen_no_cookie atttibute
- Add missing krt_lock_* bits
- Fix krt_feature_allfrag
- Fix type of EA_KRT_LOCK and EA_KRT_FEATURES
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Allow to set TCP congestion control algorithm using krt_congctl
route attribute.
Based on patch from Trisha Biswas <tbiswas@fastly.com>, thanks!
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We can distinguish BGP sessions if at least one side uses a different IP
address. Extend olock mechanism to handle local IP as a part of key, with
optional wildcard, so BGP sessions could local IP in the olock and not
block themselves.
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The help command triggered by '?' keeps the message in readline buffer,
so it could be edited. For noninteractive shell it leads to an unexpected
side effect that `echo <cmd> ? | birdc` executes the command <cmd> after
showing its help. Avoid this by clearing the readline buffer in such case.
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Increase max length of notification data in error logs from 16 to 128.
There is already enough space in the buffer.
Thanks to Marco d'Itri for the suggestion.
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When a recursive route with MPLS-labeled nexthop was exported to kernel
and read back, the nexthop_same() failed due to different labels_orig
field and kernel protocol reinstalled it unnecessarily.
For comparing hext hops, route cache has to distinguish ones with
different labels_orig, but KRT has to ignore that, so we need two
nexthop compare functions.
Thanks to Marcel Menzel for the bugreport.
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Minor changes by committer.
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In attribute cache, adata structures were stored densely in one memory
block, without regard to alignment. Let's force at least u32 alignment.
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Add support for UDP logging, using RFC 3164 syslog protocol.
Based on the patch from Alexander Zubkov <green@qrator.net>, thanks!
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Having 4 functions doing almost the same is more mess than three macros.
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For now just a dummy config but it is needed for forward
compatibility with v3.
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Implement BGP Send hold timer according to draft-ietf-idr-bgp-sendholdtimer.
The Send hold timer drops the session if the neighbor is sending keepalives,
but does not receive our messages, causing the TCP connection to stall.
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Some BGP capabilities change the BGP behavior in a significant way, so if
the configuration depends on it, it is better to not establish BGP
session when the capability is not available.
Add several BGP option to require individual BGP capabilities during
session negotiation.
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Signed-off-by: Soha Jin <soha@jin.sh>
Co-developed-by: Wende Tan <twd2.me@gmail.com>
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definition)
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This allows to modify MPLS label stack in filters. Fixes a bug in
handling of 'gw_mpls' attribute.
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Joined BIRD_CHECK_GCC_OPTION and BIRD_ADD_GCC_OPTION.
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- Change tag from 'birdlab' to 'netlab'
- Change path of gitlab-runner home dir
- Use stayrtr from Debian
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Recursive MPLS routes used hostentry from the original route, which
triggered different table than MPLS table, and therefore were not
updated.
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Either hex:01234567, or hex:01:23:45:67. No confusing formats like
hex:0123:4567:ab:cdef, which looks like there is an implicit zero byte.
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The Kernel protocol, even with the option 'learn' enabled, ignores
direct routes created by the OS kernel (on Linux these are routes
with rtm_protocol == RTPROT_KERNEL).
Implement optional behavior where both OS kernel and third-party routes
are learned, it can be enabled by 'learn all' option.
Minor changes by committer.
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- Implement EA_GET for custom BGP attributes
- Forbid EA_SET on existing opaque attributes
- Forbid redefining existing attributes
- Document possible compatibility problems
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Old configs do not define MPLS domains and may use a static protocol
to define static MPLS routes.
When MPLS channel is the only channel of static protocol, handle it
as a main channel. Also, define implicit MPLS domain if needed and
none is defined.
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Changes in scope implementation broke scope handling in for loops.
The term in for loops is supposed to be parsed in the parent scope.
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Seems like the root scope was not marked as active.
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Otherwise we would get memory leaks.
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When regular event was added from work event, we did remember that
regular event list was empty and therefore we did not use zero time
in poll(). This leads to ~3 s latency in route reload during
reconfiguration.
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When a MPLS channel is reloaded, it should reload all regular MPLS-aware
channels. This causes re-evaluation of routes in FEC map and possibly
reannouncement of MPLS routes.
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