Rafael Zalamena [Tue, 5 Oct 2021 15:37:34 +0000 (12:37 -0300)]
topotests: justify code sleep
Document the `sleep` statement so people know that we are sleeping
because we are waiting for the BFD down notification. If we don't
sleep here it is possible that we get outdated `show` command results.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
Igor Ryzhov [Tue, 5 Oct 2021 14:38:21 +0000 (17:38 +0300)]
isisd: fix redistribute CLI
Currently, it is possible to configure IPv6 protocols for IPv4
redistribution and vice versa in CLI. The YANG model doesn't allow this
so the user receives the following error:
```
nfware(config-router)# redistribute ipv4 ospf6 level-1
% Failed to edit configuration.
YANG error(s):
Invalid enumeration value "ospf6".
Invalid enumeration value "ospf6".
Invalid enumeration value "ospf6".
YANG path: Schema location /frr-isisd:isis/instance/redistribute/ipv4/protocol.
```
Let's make CLI more user-friendly and allow only supported protocols in
redistribution commands.
Rafael Zalamena [Mon, 4 Oct 2021 21:10:58 +0000 (18:10 -0300)]
lib: prevent gRPC assert on missing YANG node
`yang_dnode_get` will `assert` if no YANG node/model exist, so lets test for
its existence first before trying to access it.
This `assert` is only acceptable for internal FRR usage otherwise we
might miss typos or unmatching YANG models nodes/leaves. For gRPC usage
we should let users attempt to use non existing models without
`assert`ing.
Signed-off-by: Rafael Zalamena <rzalamena@opensourcerouting.org>
rgirada [Tue, 5 Oct 2021 07:52:36 +0000 (00:52 -0700)]
ospf6d: ospf6d is crashing upon receiving duplicated Grace LSA.
Description:
When grace lsa received, DUT is adding
the copy of the lsas to all nbrs retransmission list as part of
flooding procedure and subsequently incrementing the rmt counter in
the original the LSA. This counter is supposed to be decremented
when ack is received by nbr and the lsa will be removed from retransmission list.
But in our current scenario,
Step-1:
When GR helper is disabled, if DUT receives the grace lsa
it adds the lsa copy to nbrs retransmission list but original
LSA will be discarded since GR helper disabled.
Step-2:
GR helper enabled and DUT receives the grace lsa, as part
of flooding process all nbrs have same copy of lsa in their
corresponding rmt list which was added in step -1 due to this
the corresponding rmt counter in the original lsa is not getting
incremented.
Step-3:
If the same copy of the grace lsa received by DUT, It considers
as implicit ack from nbr if the same copy of the lsa exits in its
rmt list and subsequently decrement the rmt counter.
Since counter is zero (because of step-1 and 2) , it is asserting while decrement.
Donald Sharp [Mon, 4 Oct 2021 12:37:16 +0000 (08:37 -0400)]
ospf6d: Ensure expire thread is properly stopped
The lsa->expire thread is for keeping track of when we
are expecting to expire(remove/delete) a lsa. There
are situations where we just decide to straight up
delete the lsa, but we are not ensuring that the
lsa is not already setup for expiration.
In that case just stop the expiry thread and
do the deletion.
Additionally there was a case where ospf6d was
just dropping the fact that a thread was already
scheduled for expiration. In that case we
should just setup the timer again and it will
reset it appropriately.
Fixes: #9721 Signed-off-by: Donald Sharp <sharpd@nvidia.com>
Donald Sharp [Mon, 4 Oct 2021 13:47:29 +0000 (09:47 -0400)]
eigrpd: Ensure better `struct thread *` semantics
1) Do not explicitly set the thread pointer to NULL.
FRR should only ever use the appropriate THREAD_ON/THREAD_OFF
semantics. This is espacially true for the functions we
end up calling the thread for.
2) Fix mixup of `struct eigrp_interface` and `struct eigrp`
usage of the same thread pointer.
Donald Sharp [Mon, 4 Oct 2021 13:36:27 +0000 (09:36 -0400)]
ripd: Ensure better `struct thread *` semantics
Do not explicitly set the thread pointer to NULL.
FRR should only ever use the appropriate THREAD_ON/THREAD_OFF
semantics. This is espacially true for the functions we
end up calling the thread for.
Donald Sharp [Mon, 4 Oct 2021 13:28:36 +0000 (09:28 -0400)]
ripngd: Ensure better `struct thread *` semantics
1) Remove `struct thread *` pointers that are never used
2) Do not explicitly set the thread pointer to NULL.
FRR should only ever use the appropriate THREAD_ON/THREAD_OFF
semantics. This is espacially true for the functions we
end up calling the thread for.
rgirada [Fri, 1 Oct 2021 18:59:11 +0000 (11:59 -0700)]
ospfd: GR helper functionality change in helper exit
Description:
As per the RFC 3623 section 3.2,
OSPF nbr shouldn't be deleted even in unsuccessful helper exit.
1. Made the changes to keep neighbour even after exit.
2. Restart the dead timer after expiry in helper. Otherwise, Restarter
will be in FULL state in helper forever until it receives the 'hello'.
Low overhead bgp-evpn TPs have been added which push data out in a binary
format -
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
root@switch:~# lttng list --userspace |grep "frr_bgp:evpn"
frr_bgp:evpn_mh_nh_rmac_zsend (loglevel: TRACE_DEBUG_LINE (13)) (type: tracepoint)
frr_bgp:evpn_mh_nh_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
frr_bgp:evpn_mh_nhg_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
frr_bgp:evpn_mh_vtep_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
frr_bgp:evpn_bum_vtep_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
frr_bgp:evpn_mac_ip_zsend (loglevel: TRACE_INFO (6)) (type: tracepoint)
root@switch:~#
>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>
In addition to the tracepoints a babeltrace python plugin for pretty
printing (binary data is converted into grepable strings). Sample usage -
frr_babeltrace.py trace_path
David Lamparter [Mon, 27 Sep 2021 08:33:33 +0000 (10:33 +0200)]
pimd: fix UAF/heap corruption in BSM code
This `XFREE()` call is in plainly in the wrong spot. `rp_all` (the
224.0.0.0/4 entry) isn't supposed to be free'd ever, and the
conditional above makes quite clear that it remains in use.
It may be possible to exploit this as a heap corruption bug, maybe even
as RCE. I haven't tried; I randomly noticed this while working on the
BSM code. Luckily this code is only run by the CLI for the clear
command, so the surface is very small.
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
Donald Sharp [Sun, 26 Sep 2021 23:36:03 +0000 (19:36 -0400)]
bgpd: Don't lookup paf structure get straight to the point
The paf data structure is stored based upon an internal
bgp enum. The code is looking over all AFI/SAFI's and
doing a paf_af_find which then calls afindex to find
the right paf structure. Let's just loop over the
peer->peer_af_array[] and cut straight to the chase.
Under some loads the paf_af_find was taking up 6%
of the run time. This removes it entirely.
Converting bgp_dest_lock_node/bgp_dest_unlock_node to non-inlined function
because LTTng can't work properly with inlined and the compiler does not like
it.
Not sure how it would be with the performance, but let's see.
Louis Scalbert [Thu, 10 Jun 2021 09:30:05 +0000 (11:30 +0200)]
ospf6d: reset areas and redistribution at router-id modification
The ospf6 router-id is provided by order of preference by:
ospf6d itself if the "ospf6 router-id X.X.X.X" command is set.
- zebra. If the "ip router-id X.X.X.X" zebra command is set, the
configured IP is provided as the ID or alternatively the highest
loopback IPv4 address or else the highest interface IPv4 address.
The running ospf6 router-id is stored in ospf6->router-id.
ospf6->router-id can change in the following conditions:
- A configuration change provides a new router-id value according to
the above rules. ospf6->router-id is updated to the new value if
there is no adjacency in FULL state. Otherwise, the ospf6d process
must be restarted to take the new router-id into account.
- On startup of both zebra and ospf6d, if ospf6d has not yet received a
valid router-id, ospf6d->router-id is set to 0 (i.e. 0.0.0.0). Then,
zebra notifies ospf6d that the router-id is available.
At ospf6->router-id, the current behavior of ospf6d is the following:
- The self generated LSAs that refer to the previous router-id as the
advertising router are kept.
- Self generated LSAs are created with router-id value.
- LSAs from the redistribution that refer to the previous router-id are
kept and no new redistribution LSAs are created.
As a consequence, the routers in the ospf6 areas will get incorrect
LSAs and might not be able to install prefixes of those LSAs into their
RIB.
This fix solves this issue by resetting the areas and the redistribution
when ospf6->router-id updated.
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
David Lamparter [Wed, 22 Sep 2021 09:59:08 +0000 (11:59 +0200)]
doc/workflow: prefer typesafe containers
The typesafe containers have been around for quite a while now and
haven't gone up in a blaze of flames, so let's add a "strong
recommendation" to use them for new code and refactors.
For the nhrpd custom lists I'm already working to remove them; meanwhile
the old skiplists are primarily used in RFAPI (4 users outside of that),
so those could be next.
What remains are the old `list_*` and `hash_*`, which have >300 and >100
users respectively, making them a much harder problem to tackle. And
the new hash implementation doesn't have the same level of
debug/introspection yet (it's on my TODO.)
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
projects / mirror_frr.git / log