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Not relevant for regular BGP paths, just for BGP paths added by filters
to e.g. static routes.
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The old check assumed that @CLIENT@ does not contain
birdc, which is not true in 2.0 branc.
Thanks to Thomas Petazzoni for the bugreport and original patch.
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The command showed interfaces that were removed / in shutdown.
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When channel is not active due to not be negotiated during sessino
establishment, the LLGR timer is not allocated, so we should not show it.
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no more warnings
No more warnings over me
And while it is being compiled all the log is black and white
Release BIRD now and then let it flee
(use the melody of well-known Oh Freedom!)
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Thanks to Clemens Schrimpe for the bugreport.
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Use like this:
void func(const char *msg, va_list args) {
...
bvsnprintf(buf, len, "file %s, line %d: %V (foo %d, bar %d)", file, line, msg, &args, foo, bar);
...
}
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Pipe mode was removed in 2.0, remove reference to it in the documentation.
Thanks to Piotr Wydrych for the bugreport.
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This also includes Bison version check. Versions before 3.0 don't
support them in a reliable way and we don't promise to work with
versions older than 2.4.
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Thanks to Julien Dessaux for the report.
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The patch implements long-lived graceful restart for BGP, namely
draft-uttaro-idr-bgp-persistence-03.
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BSD systems cannot use SO_DONTROUTE, because it does not work properly
with multicast packets (perhaps it tries to find iface based on multicast
group address). But we can use MSG_DONTROUTE sendmsg() flag for unicast
packets. Works on FreeBSD, is ignored on OpenBSD and is broken on NetBSD
(i guess due to integrated routing table and ARP table).
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Thanks to Julian Schuh for the bugreport.
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The bug was introduced by an earler patch which removed additional eattr
argument to rt_notify hook.
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If export filter is changed during reconfiguration and a route disappears
between reconfiguration and refeed (e.g., if the route is a static route
also removed during the reconfiguration), the route is not withdrawn.
The issue was fixed for regular channels by an earlier patch. This patch
fixes the issue for channels in RA_ACCEPTED mode (first-pass-the-filter),
used by BGP with 'secondary' option.
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If export filter is changed during reconfiguration and a route disappears
between reconfiguration and refeed (e.g., if the route is a static route
also removed during the reconfiguration), the route is not withdrawn.
The patch fixes that by adding tx reconfiguration timestamp.
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We currently cannot assing local labels, but we can still be LSP egress
router. Therefore when we announce labeled route with local next-hop, we
should announce implicit-NULL label instead of rejecting it completely.
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RFC 3107 was bit vague with regard to labeled withdrawals, RFC 8277
clarified that. The old code was incompatible with some implementations,
namely with Juniper.
Thanks to Vadim Fedorenko for the original patch.
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Simplify neighbor cache code, fix several minor bugs, and improve
handling of ONLINK flag.
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Updated to version 63b4ce2e8c28aee6a32133e400436e4ca885215a
from git://git.savannah.gnu.org/config.git
Previous version was 93b5037172b15ad28952481933517f1ba93d125b
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on case-insensitive filesystems
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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.
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In case of missing IPv4 next hop, we should skip such routes
on transmit and ignore such routes on receive.
Thanks to Julian Schuh for the bugreport and Toke Hoiland-Jorgensen
for the original patch.
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RFC 7606 specifies handle-as-withdraw instead of session reset.
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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().
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This supersedes the EAP_* constants.
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Just to make the code a bit more clean and easier to maintain.
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Included are Makefile implicit rules to show the preprocessed source.
When debugging something around this, it may be handy.
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During route export, the receiving protocol often initialized route
metrics to default value in its import_control hook before export filter
was executed. This is inconsistent with the expectation that an export
filter would process the same route as one in the routing table and it
breaks setting these metrics before (e.g. for static routes directly in
static protocol).
The patch removes the initialization of route metrics in import_control
hook, the default values are already handled in rt_notify hook called
after export filters.
The patch also changed the behavior of OSPF to keep metrics when a route
is reannounced between OSPF instances (to be consistent with other
protocols) and the behavior when both ospf_metric1 and ospf_metric2
are specified (to have more expected behavior).
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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.
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Use full time precision to initialize random generator. The old
code was prone to initialize it to the same values in specific
circumstances (boot without RTC, multiple VMs starting at once).
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When a Babel node restarts, it loses its sequence number, which can cause
its routes to be rejected by peers until the state is cleared out by other
nodes in the network (which can take on the order of minutes).
There are two ways to fix this: Having stable storage to keep the sequence
number across restarts, or picking a different router ID each time.
This implements the latter, by introducing a new option that will cause
BIRD to randomize a high 32 bits of router ID every time it starts up.
This avoids the problem at the cost of not having stable router IDs in
the network.
Thanks to Toke Hoiland-Jorgensen for the patch.
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The router ID being assigned to routes was a uint, which discards the
upper 32 bits. This also has the nice side effect of echoing the wrong
router ID back to other routers.
Thanks to Toke Hoiland-Jorgensen for the patch.
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