Philippe Guibert [Tue, 17 Aug 2021 14:43:37 +0000 (16:43 +0200)]
bgpd: imported evpn rt5 routes copy igpmetric
when doing BGP over an IGP platform, the expectation is that
the path calculation for a given prefix takes into account the
igpmetric given by IGP.
This is true with prefixes obtained in a given BGP instance where
peering occurs. For instance, ipv4 unicast entries or l2vpn evpn
entries work this way. The igpmetric is obtained through nexthop
tracking, like below:
however, for imported EVPN RT5 entries, the igpmetric was not
copied from the parent path info. Fix it. In this way, the
imported route entries use the igpmetric of the parent pi.
David Lamparter [Tue, 18 May 2021 11:55:48 +0000 (13:55 +0200)]
pimd: fix PtP address handling
When we have a "192.0.2.1 peer 192.0.2.2/32" address on an interface, we
need to (a) recognize the local address as being on the link for our own
packets, and (b) do the IGMP socket lookup with the proper local address
rather than the peer prefix.
Fixes: efe6f18 ("pimd: fix IGMP receive handling") Cc: Nathan Bahr <nbahr@atcorp.com> Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
(cherry picked from commit a2810d30256e8de250b9e0fdc274fc4852c7877c)
David Lamparter [Tue, 20 Apr 2021 04:11:57 +0000 (06:11 +0200)]
lib, pimd: add address match mode to prefix lists
... the PIM code is kinda misusing prefix lists to match addresses.
Considering the weird semantics of access-lists, I can't fault it.
However, prefix lists aren't great at matching addresses by default,
since they try to match the prefix length too. So, here's an "address
match mode" for prefix lists to get that to work more reasonably.
ospfd: Summarised External LSA is not flushed in one scenario
Fix CI Failure test_ospf_type5_summary_tc45_p0
Problem Statement:
==================
Summarised LSA is not flushed in OSPFv2 in below scenario:
1. Configure summary-address in ospfv2
2. redistribute static and connected.
3. Check the LSAs are received on neighbor.
4. Now remove all OSPFv2 configs, so neighbor will still have the summarised LSA.
5. Configure router ospf with redistribute static and connected.
6. Check the DB, summarised LSA is present although the configuration is not present.
7. Now configure the summary-address and remove the configuration after sometime.
8. The summarised LSA will be still present.
RCA:
==================
When self originated LSA is received from the neighbor and that
LSA is summarised one, the LSA is refreshed but a flag is not set
due to which it was not able to remove it later.
Fix:
==================
Set the originated flag when refreshing summarised LSA.
Igor Ryzhov [Tue, 10 Aug 2021 18:46:37 +0000 (21:46 +0300)]
lib: fix prefix-list duplication check
Currently, when we check the new prefix-list entry for duplication, we
only take filled in fields into account and ignore optional fields.
For example, if we already have `ip prefix-list A 0.0.0.0/0 le 32` and
we try to add `ip prefix-list A 0.0.0.0/0`, it is treated as duplicate.
We should always compare all prefix-list fields when doing the check.
Igor Ryzhov [Thu, 12 Aug 2021 12:49:54 +0000 (15:49 +0300)]
ospfd: fix initialization when vrf doesn't exist yet
There are a couple of things that are not initialized if the OSPF router
is created in a non-existent VRF:
- ospf_lsa_maxage_walker
- ospf_lsa_refresh_walker
- ospf_opaque_type11_lsa_init
Rearrange some code to always initialize them and make it easier to find
similar problems in the future.
Igor Ryzhov [Thu, 12 Aug 2021 16:07:53 +0000 (19:07 +0300)]
bgpd: fix segfault when re-adding "match evpn default-route" rule
When using "match evpn default-route" rule, match_arg is NULL and strcmp
is not happy with that. There's already a special function named rulecmp
that handles such situations.
Igor Ryzhov [Tue, 17 Aug 2021 12:36:55 +0000 (15:36 +0300)]
ospfd: explicitly exit from the router node
There's a new "mpls ldp-sync" command added to the OSPF router node in
FRR 8.0. This change broke the following config:
```
router ospf
!
mpls ldp
discovery hello interval 10
!
```
The config was broken because the "mpls ldp" line is now treated as an
"mpls ldp-sync" line inside the router node. We must explicitly print
"exit" at the end of OSPF router node to fix the issue.
Igor Ryzhov [Wed, 11 Aug 2021 14:46:31 +0000 (17:46 +0300)]
vtysh, pathd: fix pcep node-entering commands
pce-config, pce and pcc node-entering commands in vtysh include no-form,
which is incorrect. Currently, when user passes a no-form command like
`no pcc`, vtysh enters the node while pathd deletes the node and this
leads to a desynchronization.
Regular and no-form commands should be defined separately to fix this.
Don Slice [Wed, 11 Aug 2021 12:45:23 +0000 (08:45 -0400)]
bgpd: Stop prepending peer-as if self-originated and lastas configured
Problem seen where if "set aspath-prepend last-as" configured and
applied outbound, we prepend the peer's asn which causes our self-
originated routes to be denied.
Yash Ranjan [Wed, 4 Aug 2021 11:53:10 +0000 (04:53 -0700)]
ospf6d: Check the cost only when asbr_present for ECMP routes
For ECMP routes, the metric cost and metric type are compared
even when the asbr entry is not present. This stops the routes
from getting removed when max age LSAs are received for the
ECMP routes.
Donald Sharp [Sun, 8 Aug 2021 12:23:24 +0000 (08:23 -0400)]
bgpd: bgp_packet_process_error can access peer after deletion
in bgp_io.c upon packet read of some error we are storing
the peer pointer on a thread to call bgp_packet_process_error.
In this case an event is generated that is not guaranteed to be
run immediately. It could come in *after* the peer data structure
is deleted and as such we now are writing into memory that we
no longer possibly own as a peer data structure.
Modify the code so that the peer can track the thread associated
with the read error and then it can wisely kill that thread
when deleting the peer data structure.
Donald Sharp [Mon, 9 Aug 2021 12:01:06 +0000 (08:01 -0400)]
zebra: Properly note add/update for rib_add_multipath_nhe
When calling rib_add_multipath_nhe ensure that we have
well aligned return codes that mean something so that
interersted parties can properly handle the situation.
Martin Winter [Mon, 9 Aug 2021 23:52:05 +0000 (01:52 +0200)]
redhat: Install frr.conf only if no per daemon config exists
Install frr.conf template as a template file, but only install it
as a config file if no per daemon file exists. This will use the
integrated config with new setups, but keeps the per-daemon config
for existing users
Signed-off-by: Martin Winter <mwinter@opensourcerouting.org>
Problem Statement:
==================
valgrind shows memleaks in rp_table, when pimd shuts down gracefully.
2020-05-05 22:09:29,451 ERROR: Memory leaks in router [r4] for daemon [pimd]
2020-05-05 22:09:29,451 ERROR: Memory leaks in router [r4] for daemon [zebra]
2020-05-05 22:09:29,637 ERROR: Found memory leak in module pimd
2020-05-05 22:09:29,638 ERROR: ==6178== 184 (56 direct, 128 indirect) bytes in 1 blocks are definitely lost in loss record 21 of 21
2020-05-05 22:09:29,638 ERROR: ==6178== at 0x4C2FFAC: calloc (vg_replace_malloc.c:762)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x4E855EE: qcalloc (memory.c:111)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x4EAA43C: route_table_init_with_delegate (table.c:52)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x1281A1: pim_rp_init (pim_rp.c:114)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x11D0F8: pim_instance_init (pim_instance.c:117)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x11D0F8: pim_vrf_new (pim_instance.c:150)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x4EB1BEC: vrf_get (vrf.c:209)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x4EB2B2F: vrf_init (vrf.c:493)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x11D227: pim_vrf_init (pim_instance.c:217)
2020-05-05 22:09:29,638 ERROR: ==6178== by 0x11BBAB: main (pim_main.c:121)
Fix:
====
rp_info is allocated in pim_rp_init API. rp_info pointer is present
in rp_list and rp_table. In rp_list cleanup, the memory for rp_info
gets freed. rp_table clean up should be done first and then rp_list.
pimd: pim_ifchannel_local_membership_add should not inherit if (S,G) rpf unresolved
Problem:
S,G entry has iif = oif in FHR is LHR case.
Setup:-
R11-----R2----R4
R11 :- FHR and LHR
R2 :- RP
R4 :- LHR
Issue :-
1) shut mapped interface in R11
2) wait for 5 min
3) do FRR restart
5) No shut of mapped interface
OIL is added for local interface also where OIL is same as IIF
and duplicate traffic observed on R4 receives in Ixia
RCA:
pim_ifchannel_local_membership_add adds inherited oif from starg when iif for
SG is unavailable.
When rpf for that SG resolves to this inherited oif from starg, iif is also in oif.
This results in dup traffic.
Fix:
If iif is not available, do not inherit from starg.
ospf6d: fix argument processing in the "area ... range" command
* When the "cost" argument isn't present, the default cost should be
used instead of preserving the previously configured one (if any);
* When the "not-advertise" argument isn't present, the "not-advertise"
flag should be unset regardless if it was previously configured or
not.
Configuration commands should be deterministic and work in the same
way regardless of the current state.
Igor Ryzhov [Thu, 29 Jul 2021 17:21:00 +0000 (20:21 +0300)]
zebra: remove checks for src address existence when using "set src"
1. This check is absolutely useless. Nothing keeps user from deleting
the address right after this check.
2. This check prevents zebra from correctly reading the user config with
"set src" because of a race with interface startup (see #4249).
3. NO OPERATIONAL DATA USAGE ON VALIDATION STAGE.
batmancn [Mon, 30 Nov 2020 12:04:44 +0000 (20:04 +0800)]
zebra: bugfix of error quit of zebra, due to no nexthop ACTIVE
There exists some rare situations where fpm will attempt
to send a route update with no valid nexthops. In that
case an assert would be hit. This is not good for
trying to keep your routing daemons up and running
when we can safely just recover the situation.
Fixes #7588 Signed-off-by: batmancn <batmanustc@gmail.com>
<fixed commit message, and used zlog_err> Signed-off-by: Donald Sharp <sharpd@nvidia.com>
(cherry picked from commit 5306e6cf00c58a4c4558609d623ecbbd79faabf1)
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