Grab the count of streams in ibuf when it is protected
by a mutex. Since this data is written to it in another
pthread.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
msg_new takes a uint16_t, the length passed
down variable is a unsigned int, thus 32 bit.
It's possible, but highly unlikely, that the
msglen could be greater than 16 bit.
Let's just add some checks to ensure that
this could not happen.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Related: https://datatracker.ietf.org/doc/html/draft-white-linklocal-capability
TL;DR; use 16 bytes long next-hops for point-to-point (unnumbered) links instead
of sending 32 bytes (::/LL, GUA/LL, LL/LL combinations).
For backward compatiblity we should handle even 32 bytes existing next hops.
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
The frr-reload script currently deletes configurations
line-by-line under an interface context, if the interface was removed.
This approach fails when the interface has already been removed from the system.
This change enables whole interface removal using a single command
(no interface <interface-name>), simplifying the reload process and
reducing reload errors.
Signed-off-by: Julian Klaiber <jklaiber@open-systems.com>
Add ability to enable -w option for all daemons in a topotest and use
this option instead of the deprecated -n.
Signed-off-by: Igor Ryzhov <idryzhov@gmail.com>
Current -n option is only for zebra and mgmtd. All other daemons receive
the VRF backend configuration from zebra upon connection to it. This
leads to a potential race condition - daemons need to know the backend
before they start reading their config, but they can be not connected to
zebra yet at this point. As the VRF backend cannot change during runtime,
let's introduce a new global -w option for setting netns backend, to
make sure that all daemons know their VRF backend immediately after
start.
The reason for introducing a new option instead of making -n global is
that ospfd already uses -n for another purposes.
Signed-off-by: Igor Ryzhov <idryzhov@gmail.com>
vrf->ns_ctxt is only ever used in zebra, so move its initialization to
zebra's callback. Ideally this pointer shouldn't even be a part of
library's vrf struct, and moved to zebra-specific struct, but this is
the first step.
Signed-off-by: Igor Ryzhov <idryzhov@gmail.com>
The backend type cannot be unknown. It is configured to VRF_LITE by
default in zebra anyway, so just init to VRF_LITE in the lib and remove
the UNKNOWN type.
Signed-off-by: Igor Ryzhov <idryzhov@gmail.com>
Currently FRR when installing a nexthop group, the installation can fail.
The assumption with the code was that the current nexthop group was
not already installed. This leaves a problem state where if the
users of the nexthop group are removed, the nexthop group will be
removed possibly leaving a orphaned nexthop group in the data plane.
FRR on a nexthop group installation does not actually know the status
of the nexthop group in the kernel. It's possible that a earlier
version of the nexthop group is left in play. It's possible that
there is no nexthop group in the kernel at all. Leaving the
Installed flag alone allows upon Zebra removing the nexthop
group when it is removed from zebra.
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
FRR supports dynamic capability which is useful to exchange the capabilities
without tearing down the session. ENHE capability was missed to be included
handling via dynamic capability. Let's add it too.
This was missed and asked in Slack that it would be useful.
Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
Currently if you have an interface down event, Zebra
sets the nexthop(s) as !ACTIVE that use it. On
interface up events the singleton nexthops are not being
set as ACTIVE. Due to timing events it is sometimes
possible to end up with a route that is using a singleton
Change singleton nexthops to set the nexthop to ACTIVE.
This will allow the nexthop to be reinstalled appropriately
as well.
I was able to easily reproduce this using sharpd since
it does not attempt to reinstall the routes when a interface
goes up/down.
Before:
D>* 10.0.0.0/32 [150/0] via 192.168.102.34, dummy2, weight 1, 00:00:01
sharpd@eva ~/frr5 (master)> sudo ip link set dummy2 down ; sudo ip link set dummy2 up
D> 10.0.0.0/32 [150/0] (350) via 192.168.102.34, dummy2 inactive, weight 1, 00:00:10
After code change:
D>* 10.0.0.0/32 [150/0] (73) via 192.168.102.34, dummy2, weight 1, 00:00:14
sharpd@eva ~/frr5 (master)> sudo ip link set dummy2 down ; sudo ip link set dummy2 up
D>* 10.0.0.0/32 [150/0] (73) via 192.168.102.34, dummy2, weight 1, 00:00:21
Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Route aggregation should be checked after a route is added, and
not before. This is for code flow and consistency.
Signed-off-by: Enke Chen <enchen@paloaltonetworks.com>
Add a mechanism in route-map to filter out route-map which have a list
of communities greater than the given number.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com>
