Rajasekar Raja [Wed, 10 Jul 2024 23:46:29 +0000 (16:46 -0700)]
bgpd: backpressure - fix to properly remove dest for bgp under deletion
In case of imported routes (L3vni/vrf leaks), when a bgp instance is
being deleted, the peer->bgp comparision with the incoming bgp to remove
the dest from the pending fifo is wrong. This can lead to the fifo
having stale entries resulting in crash.
Two changes are done here.
- Instead of pop/push items in list if the struct bgp doesnt match,
simply iterate the list and remove the expected ones.
- Corrected the way bgp is fetched from dest rather than relying on
path_info->peer so that it works for all kinds of routes.
Signed-off-by: Chirag Shah <chirag @nvidia.com> Signed-off-by: Rajasekar Raja <rajasekarr@nvidia.com>
(cherry picked from commit 4395fcd8e120958a91d3a11f918e9071b1cb5619)
Use `vtysh` with this input file:
```
ip route A nh1
ip route A nh2
ip route B nh1
ip route B nh2
```
When running "ip route B" with "nh1" and "nh2", the procedure maybe is:
1) Create the two nexthops: "nh1" and "nh2".
2) Register "nh1" with `static_zebra_nht_register()`, then the states of both
"nh1" and "nht2" are set to "STATIC_SENT_TO_ZEBRA".
3) Register "nh2" with `static_zebra_nht_register()`, then only the routes with
nexthop of "STATIC_START" will be sent to zebra.
So, send the routes with the nexthop of "STATIC_SENT_TO_ZEBRA" to zebra.
anlan_cs [Sat, 15 Jun 2024 12:34:20 +0000 (20:34 +0800)]
ldpd: fix wrong gtsm count
In linux networking stack, the received mpls packets will be processed
by the host *twice*, one as mpls packet, the other as ip packet, so
its ttl decreased 1.
So, we need release the `IP_MINTTL` value if gtsm is enabled, it is for the
mpls packets of neighbor session caused by the command:
`label local advertise explicit-null`.
This change makes the gtsm mechanism a bit deviation.
zhou-run [Thu, 27 Jun 2024 03:51:02 +0000 (11:51 +0800)]
isisd: fix crash when obtaining the next hop to calculate LFA on LAN links
When a neighbor connection is disconnected, it may trigger LSP re-generation as a timer task, but this process may be delayed. As a result, the list of neighbors in area->adjacency_list may be inconsistent with the neighbors in lsp->tlvs->oldstyle_reach/extended_reach. For example, the area->adjacency_list may lack certain neighbors even though they are present in the LSP. When computing SPF, the call to isis_spf_build_adj_list() generates the spftree->sadj_list, which reflects the real neighbors in the area->adjacency_list. However, in the case of LAN links, spftree->sadj_list may include additional pseudo neighbors.
The pre-loading of tents through the call to isis_spf_preload_tent involves two steps:
1. isis_spf_process_lsp() is called to generate real neighbor vertices based on the root LSP and pseudo LSP.
2. isis_spf_add_local() is called to add corresponding next hops to the vertex->Adj_N list for the real neighbor vertices.
In the case of LAN links, the absence of corresponding real neighbors in the spftree->sadj_list prevents the execution of the second step. Consequently, the vertex->Adj_N list for the real neighbor vertices lacks corresponding next hops. This leads to a null pointer access when isis_lfa_compute() is called to calculate LFA.
As for P2P links, since there are no pseudo neighbors, only the second step is executed, which does not create real neighbor vertices and therefore does not encounter this issue.
The backtrace is as follows:
(gdb) bt
#0 0x00007fd065277fe1 in raise () from /lib/x86_64-linux-gnu/libpthread.so.0
#1 0x00007fd065398972 in core_handler (signo=11, siginfo=0x7ffc5c0636b0, context=0x7ffc5c063580) at ../lib/sigevent.c:261
#2 <signal handler called>
#3 0x00005564d82f8408 in isis_lfa_compute (area=0x5564d8b143f0, circuit=0x5564d8b21d10, spftree=0x5564d8b06bf0, resource=0x7ffc5c064410) at ../isisd/isis_lfa.c:2134
#4 0x00005564d82f8d78 in isis_spf_run_lfa (area=0x5564d8b143f0, spftree=0x5564d8b06bf0) at ../isisd/isis_lfa.c:2344
#5 0x00005564d8315964 in isis_run_spf_with_protection (area=0x5564d8b143f0, spftree=0x5564d8b06bf0) at ../isisd/isis_spf.c:1827
#6 0x00005564d8315c15 in isis_run_spf_cb (thread=0x7ffc5c064590) at ../isisd/isis_spf.c:1889
#7 0x00007fd0653b1f04 in thread_call (thread=0x7ffc5c064590) at ../lib/thread.c:1990
#8 0x00007fd06534a97b in frr_run (master=0x5564d88103c0) at ../lib/libfrr.c:1198
#9 0x00005564d82e7d5d in main (argc=5, argv=0x7ffc5c0647b8, envp=0x7ffc5c0647e8) at ../isisd/isis_main.c:273
(gdb) f 3
#3 0x00005564d82f8408 in isis_lfa_compute (area=0x5564d8b143f0, circuit=0x5564d8b21d10, spftree=0x5564d8b06bf0, resource=0x7ffc5c064410) at ../isisd/isis_lfa.c:2134
2134 ../isisd/isis_lfa.c: No such file or directory.
(gdb) p vadj_primary
$1 = (struct isis_vertex_adj *) 0x0
(gdb) p vertex->Adj_N->head
$2 = (struct listnode *) 0x0
(gdb) p (struct isis_vertex *)spftree->paths->l.list->head->next->next->next->next->data
$8 = (struct isis_vertex *) 0x5564d8b5b240
(gdb) p $8->type
$9 = VTYPE_NONPSEUDO_TE_IS
(gdb) p $8->N.id
$10 = "\000\000\000\000\000\002"
(gdb) p $8->Adj_N->count
$11 = 0
(gdb) p (struct isis_vertex *)spftree->paths->l.list->head->next->next->next->next->next->data
$12 = (struct isis_vertex *) 0x5564d8b73dd0
(gdb) p $12->type
$13 = VTYPE_NONPSEUDO_TE_IS
(gdb) p $12->N.id
$14 = "\000\000\000\000\000\003"
(gdb) p $12->Adj_N->count
$15 = 0
(gdb) p area->adjacency_list->count
$16 = 0
The backtrace provided above pertains to version 8.5.4, but it seems that the same issue exists in the code of the master branch as well.
The scenario where a vertex has no next hop is normal. For example, the "clear isis neighbor" command invokes isis_vertex_adj_del() to delete the next hop of a vertex. Upon reviewing all the instances where the vertex->Adj_N list is used, I found that only isis_lfa_compute() lacks a null check. Therefore, I believe that modifying this part will be sufficient. Additionally, the vertex->parents list for IP vertices is guaranteed not to be empty.
Test scenario:
Setting up LFA for LAN links and executing the "clear isis neighbor" command easily reproduces the issue.
Piotr Suchy [Wed, 22 May 2024 08:41:52 +0000 (10:41 +0200)]
bgpd: Ignore routes from evpn if VRF is unknown
Fix for a bug, where FRR fails to install route received for an unknown but later-created VRF - detailed description can be found here https://github.com/FRRouting/frr/issues/13708
Loïc Sang [Wed, 19 Jun 2024 14:19:22 +0000 (16:19 +0200)]
bgpd: avoid clearing routes for peers that were never established
Under heavy system load with many peers in passive mode and a large
number of routes, bgpd can enter an infinite loop. This occurs while
processing timeout BGP_OPEN messages, which prevents it from accepting
new connections. The following log entries illustrate the issue:
>bgpd[6151]: [VX6SM-8YE5W][EC 33554460] 3.3.2.224: nexthop_set failed, resetting connection - intf 0x0
>bgpd[6151]: [P790V-THJKS][EC 100663299] bgp_open_receive: bgp_getsockname() failed for peer: 3.3.2.224
>bgpd[6151]: [HTQD2-0R1WR][EC 33554451] bgp_process_packet: BGP OPEN receipt failed for peer: 3.3.2.224
... repeating
The issue occurs when bgpd handles a massive number of routes in the RIB
while receiving numerous BGP_OPEN packets. If bgpd is overloaded, it
fails to process these packets promptly, leading the remote peer to
close the connection and resend BGP_OPEN packets.
When bgpd eventually starts processing these timeout BGP_OPEN packets,
it finds the TCP connection closed by the remote peer, resulting in
"bgp_stop()" being called. For each timeout peer, bgpd must iterate
through the routing table, which is time-consuming and causes new
incoming BGP_OPEN packets to timeout, perpetuating the infinite loop.
To address this issue, the code is modified to check if the peer has
been established at least once before calling "bgp_clear_route_all()".
This ensures that routes are only cleared for peers that had a
successful session, preventing unnecessary iterations over the routing
table for peers that never established a connection.
With this change, BGP_OPEN timeout messages may still occur, but in the
worst case, bgpd will stabilize. Before this patch, bgpd could enter a
loop where it was unable to accpet any new connections.
Donatas Abraitis [Thu, 13 Jun 2024 06:00:21 +0000 (09:00 +0300)]
bgpd: Check if we have real stream data for tunnel encapsulation sub-tlvs
When the packet is malformed it can use whatever values it wants. Let's check
what the real data we have in a stream instead of relying on malformed values.
Donatas Abraitis [Mon, 24 Jun 2024 17:16:16 +0000 (20:16 +0300)]
bgpd: Relax OAD (One-Administration-Domain) for RFC8212
RFC 8212 defines leak prevention for eBGP peers, but BGP-OAD defines a new
peering type One Administrative Domain (OAD), where multiple ASNs could be used
inside a single administrative domain. OAD allows sending non-transitive attributes,
so this prevention should be relaxed too.
Donatas Abraitis [Thu, 13 Jun 2024 05:12:10 +0000 (08:12 +0300)]
bgpd: Check if we have really enough data before doing memcpy for FQDN capability
We advance data pointer (data++), but we do memcpy() with the length that is 1-byte
over, which is technically heap overflow.
```
==411461==ERROR: AddressSanitizer: heap-buffer-overflow on address 0x50600011da1a at pc 0xc4f45a9786f0 bp 0xffffed1e2740 sp 0xffffed1e1f30
READ of size 4 at 0x50600011da1a thread T0
0 0xc4f45a9786ec in __asan_memcpy (/home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/.libs/bgpd+0x3586ec) (BuildId: e794c5f796eee20c8973d7efb9bf5735e54d44cd)
1 0xc4f45abf15f8 in bgp_dynamic_capability_fqdn /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_packet.c:3457:4
2 0xc4f45abdd408 in bgp_capability_msg_parse /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_packet.c:3911:4
3 0xc4f45abdbeb4 in bgp_capability_receive /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_packet.c:3980:9
4 0xc4f45abde2cc in bgp_process_packet /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_packet.c:4109:11
5 0xc4f45a9b6110 in LLVMFuzzerTestOneInput /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_main.c:582:3
```
Donatas Abraitis [Wed, 12 Jun 2024 19:54:45 +0000 (22:54 +0300)]
bgpd: Check if we have really enough data before doing memcpy for software version
If we receive CAPABILITY message (software-version), we SHOULD check if we really
have enough data before doing memcpy(), that could also lead to buffer overflow.
(data + len > end) is not enough, because after this check we do data++ and later
memcpy(..., data, len). That means we have one more byte.
Hit this through fuzzing by
```
0 0xaaaaaadf872c in __asan_memcpy (/home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/.libs/bgpd+0x35872c) (BuildId: 9c6e455d0d9a20f5a4d2f035b443f50add9564d7)
1 0xaaaaab06bfbc in bgp_dynamic_capability_software_version /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_packet.c:3713:3
2 0xaaaaab05ccb4 in bgp_capability_msg_parse /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_packet.c:3839:4
3 0xaaaaab05c074 in bgp_capability_receive /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_packet.c:3980:9
4 0xaaaaab05e48c in bgp_process_packet /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_packet.c:4109:11
5 0xaaaaaae36150 in LLVMFuzzerTestOneInput /home/ubuntu/frr-public/frr_public_private-libfuzzer/bgpd/bgp_main.c:582:3
```
Chirag Shah [Wed, 19 Jun 2024 00:21:49 +0000 (17:21 -0700)]
zebra: fix evpn mh bond member proto reinstall
In case of EVPN MH bond, a member port going in
protodown state due to external reason (one case being linkflap),
frr updates the state correctly but upon manually
clearing external reason trigger FRR to reinstate
protodown without any reason code.
Fix is to ensure if the protodown reason was external
and new state is to have protodown 'off' then do no reinstate
protodown.
Ticket: #3947432
Testing:
switch:#ip link show swp1
4: swp1: <NO-CARRIER,BROADCAST,MULTICAST,SLAVE,UP> mtu 9216 qdisc
pfifo_fast master bond1 state DOWN mode DEFAULT group default qlen
1000
link/ether 1c:34:da:2c:aa:68 brd ff:ff:ff:ff:ff:ff protodown on
protodown_reason <linkflap>
switch:#ip link set swp1 protodown off protodown_reason linkflap off
switch:#ip link show swp1
4: swp1: <NO-CARRIER,BROADCAST,MULTICAST,SLAVE,UP> mtu 9216 qdisc
pfifo_fast master bond1 state DOWN mode DEFAULT group default qlen
1000
link/ether 1c:34:da:2c:aa:68 brd ff:ff:ff:ff:ff:ff
Kacper Kwaśny [Mon, 27 May 2024 09:03:30 +0000 (11:03 +0200)]
bgpd: fixed failing remove of vrf if there is a stale l3vni
Problem statement:
==================
When a vrf is deleted from the kernel, before its removed from the FRR
config, zebra gets to delete the the vrf and assiciated state.
It does so by sending a request to delete the l3 vni associated with the
vrf followed by a request to delete the vrf itself.
The zebra client communication is asynchronous and about 1/5 cases the
bgp client process them in a different order.
2023/10/06 06:22:18 BGP: [VP18N-HB5R6] VRF testVRF1001(766) is to be
deleted.
2023/10/06 06:22:18 BGP: [RH4KQ-X3CYT] VRF testVRF1001(766) is to be
disabled.
2023/10/06 06:22:18 BGP: [X8ZE0-9TS5H] VRF disable testVRF1001 id 766
2023/10/06 06:22:18 BGP: [X67AQ-923PR] Deregistering VRF 766
2023/10/06 06:22:18 BGP: [K52W0-YZ4T8] VRF Deletion:
testVRF1001(4294967295)
.. and a bit later :
2023/10/06 06:22:18 BGP: [MRXGD-9MHNX] DJERNAES: process L3VNI 1001 DEL
2023/10/06 06:22:18 BGP: [NCEPE-BKB1G][EC 33554467] Cannot process L3VNI
1001 Del - Could not find BGP instance
When the bgp vrf config is removed later it fails on the sanity check if
l3vni is removed.
Solution:
=========
The solution is to make bgp cleanup the l3vni a bgp instance is going
down.
The fix:
========
The fix is to add a function in bgp_evpn.c to be responsible for for
deleting the local vni, if it should be needed, and call the function
from bgp_instance_down().
Testing:
========
Created a test, which can run in container lab that remove the vrf on
the host before removing the vrf and the bgp config form frr. Running
this test in a loop trigger the problem 18 times of 100 runs. After the
fix it did not fail.
To verify the fix a log message (which is not in the code any longer)
were used when we had a stale l3vni and needed to call
bgp_evpn_local_l3vni_del() to do the cleanup. This were hit 20 times in
100 test runs.
Signed-off-by: Kacper Kwasny <kkwasny@akamai.com>
bgpd: braces {} are not necessary for single line block
Donald Sharp [Fri, 14 Jun 2024 17:36:51 +0000 (13:36 -0400)]
zebra: Prevent starvation in dplane_thread_loop
When removing a large number of routes, the linux kernel can take the
cpu for an extended amount of time, leaving a situation where FRR
detects a starvation event.
Let's modify the loop in dplane_thread_loop such that after a provider
has been run, check to see if the event should yield, if so, stop
and reschedule this for the future.
Renato Westphal [Fri, 7 Jun 2024 15:03:17 +0000 (12:03 -0300)]
tests: introduce method to update reference data in isis_tilfa_topo1
The isis_tilfa_topo1 topotest is comprehensive and contains a large
amount of reference data. One problem is that, when changes occur,
updating this reference data can be difficult.
To address this problem, this commit introduces a method to
automatically regenerate the reference data by setting the `REGEN_DATA`
environment variable.
When `REGEN_DATA` is set, the topotest regenerates reference data
from the current run instead of comparing against existing reference
data. Note that regenerated data must be manually verified for
correctness.
This commit also simplifies the reference data by replacing all diff
files with complete JSON snapshots.
Renato Westphal [Fri, 7 Jun 2024 13:41:38 +0000 (10:41 -0300)]
tests: rework isis_tilfa_topo1 to fix timing issues
In this topotest, steps 10-15 were added to test the IS-IS switchover
functionality. In short, two cases were tested: switchover after a
link down event and switchover after a BFD down event. Both cases
were tested in sequence on the same router, rt6. This involved the
following steps:
- Setting the SPF delay timer to 15 seconds
- Shutting down the eth-rt5 interface from the switch side
- Testing the post-switchover RIB and LIB (triggered by the link down
event)
- Testing the post-SPF RIB and LIB
- Bringing the eth-rt5 interface back up
- Configuring a BFD session between rt6 and rt5
- Shutting down the eth-rt5 interface from the switch side once again
- Testing the post-switchover RIB and LIB (triggered by the BFD down
event)
- Testing the post-SPF RIB and LIB
Since the time window to test the post-switchover RIB and LIB was too
narrow (10 seconds), these tests were having sporadic failures.
To resolve this problem, we can simplify the switchover test as follows:
- Setting the SPF delay timer to 60 seconds (not 15)
- Disabling "link-detect" on rt6's eth-rt5 interface
- Shutting down the eth-rt5 interface from the switch side
- On rt6, testing the post-switchover RIB and LIB (triggered by the
BFD down event)
- On rt5, testing the post-switchover RIB and LIB (triggered by the
link down event)
Notice how we can test both post-link-down and post-BFD-down switchover
cases simultaneously by having different "link-detect" configurations
on rt5 and rt6. Additionally, by using a larger SPF delay timer, the
time window to test the post-switchover RIB and LIB is much larger
and less prone to sporadic failures.
Christian Hopps [Sat, 8 Jun 2024 19:37:47 +0000 (15:37 -0400)]
ci: do apt-get update before installing required modules
- Use `uname -r` to also install specific module versions since
with github runners the running kernel can become out-dated with
the deployed packages.
Christian Hopps [Thu, 6 Jun 2024 18:08:00 +0000 (14:08 -0400)]
mgmtd: add empty notif xpath map for completeness
New back-end clients may need to add notification static allocations so
we should have it available for those users, rather than requiring the
new user delve into the mgmtd infra and modify it themselves.
Louis Scalbert [Fri, 24 May 2024 14:34:23 +0000 (16:34 +0200)]
zebra: fix show route memory consumption
When displaying a route table in JSON, a table JSON object is storing
all the prefix JSON objects containing the prefix information. This
results in excessive memory allocation for JSON objects, potentially
leading to an out-of-memory error on the machine with large routing
tables.
To Fix the memory consumption issue for the "show ip[v6] route [vrf XX]
json" command, display the prefixes one by one and free the memory of
each JSON object after it has been displayed.
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Louis Scalbert [Fri, 24 May 2024 15:06:59 +0000 (17:06 +0200)]
zebra: fix show route vrf all memory consumption
0e2fc3d67f ("vtysh, zebra: Fix malformed json output for multiple vrfs
in command 'show ip route vrf all json'") has been reverted in the
previous commit. Although the fix was correct, it was consuming too muca
memory when displaying large route tables.
A root JSON object was storing all the JSON objects containing the route
tables, each containing their respective prefixes in JSON objects. This
resulted in excessive memory allocation for JSON objects, potentially
leading to an out-of-memory error on the machine.
To Fix the memory consumption issue for the "show ip[v6] route vrf all
json" command, display the tables one by one and free the memory of each
JSON object after it has been displayed.
Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Rajesh Girada [Mon, 20 May 2024 16:34:41 +0000 (09:34 -0700)]
ospf6d: Handling Topo Change in GR-HELPER mode for max-age lsas
Description:
OSPF6 GR HELPER router should consider as TOPOCHANGE when
it receives lsas with max age and should exit from Helper.
But, it is not exiting from helper because this max age lsa is
considered as duplicated lsa since the sender uses same seq
number for max age lsa from the previous lsa update.
Currently, topo change is not considered for duplicated lsas.
So removed the duplicated check when validating TOPOCHNAGE.
Christian Hopps [Thu, 6 Jun 2024 08:50:05 +0000 (08:50 +0000)]
tests: munet: update to version 0.14.9
Topotest relevant changes:
- add support for `timeout` arg to `cmd_*()`
- handle invalid regexp in CLI commands
- fix long interface name support
Full munet changelog:
munet: 0.14.9: add support for `timeout` arg to `cmd_*()`
munet: 0.14.8: cleanup the cleanup (kill) on launch options
munet: 0.14.7: allow multiple extra commands for shell console init
munet: 0.14.6:
- qemu: gather gcda files where munet can find them
- handle invalid regexp in CLI commands
munet: 0.14.5:
- (podman) pull missing images for containers
- fix long interface name support
- add another router example
munet: 0.14.4: mutest: add color to PASS/FAIL indicators on tty consoles
munet: 0.14.3: Add hostnet node that runs it's commands in the host network namespace.
munet: 0.14.2:
- always fail mutest tests on bad json inputs
- improve ssh-remote for common use-case of connecting to host connected devices
- fix ready-cmd for python v3.11+
munet: 0.14.1: Improved host interface support.
Dave LeRoy [Wed, 5 Jun 2024 17:22:57 +0000 (10:22 -0700)]
nhrpd: cleans up shortcut cache entries on termination
nhrp_shortcut_terminate() previously was just freeing the associated AFI shortcut
RIBs and not addressing existing shortcut cache entries. This cause a use after
free issue in vrf_terminate() later in the terminate sequence
NHRP: Received signal 7 at 1717516286 (si_addr 0x1955d, PC 0x7098786912c0); aborting...
NHRP: zlog_signal+0xf5 709878ad12557fff3d992eb0 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: core_handler+0xb5 709878b0db857fff3d992ff0 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: __sigaction+0x50 7098786425207fff3d993140 /lib/x86_64-linux-gnu/libc.so.6 (mapped at 0x709878600000)
NHRP: ---- signal ----
NHRP: __lll_lock_wait_private+0x90 7098786912c07fff3d9936d8 /lib/x86_64-linux-gnu/libc.so.6 (mapped at 0x709878600000)
NHRP: pthread_mutex_lock+0x112 7098786980027fff3d9936e0 /lib/x86_64-linux-gnu/libc.so.6 (mapped at 0x709878600000)
NHRP: _event_add_read_write+0x63 709878b1f4237fff3d993700 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: zclient_send_message+0xd4 709878b376147fff3d993770 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: nhrp_route_announce+0x1ad 5ab34d63d39d7fff3d993790 /usr/lib/frr/nhrpd (mapped at 0x5ab34d621000)
NHRP: nhrp_shortcut_cache_notify+0xd8 5ab34d63e7587fff3d99d4e0 /usr/lib/frr/nhrpd (mapped at 0x5ab34d621000)
NHRP: nhrp_cache_free+0x165 5ab34d632f257fff3d99d510 /usr/lib/frr/nhrpd (mapped at 0x5ab34d621000)
NHRP: hash_iterate+0x4d 709878ab949d7fff3d99d540 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: nhrp_cache_interface_del+0x37 5ab34d633eb77fff3d99d580 /usr/lib/frr/nhrpd (mapped at 0x5ab34d621000)
NHRP: nhrp_if_delete_hook+0x26 5ab34d6350d67fff3d99d5a0 /usr/lib/frr/nhrpd (mapped at 0x5ab34d621000)
NHRP: if_delete_retain+0x3d 709878abcd1d7fff3d99d5c0 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: if_delete+0x4c 709878abd87c7fff3d99d600 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: if_terminate+0x53 709878abda837fff3d99d630 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: vrf_terminate_single+0x24 709878b23c747fff3d99d670 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: nhrp_request_stop+0x34 5ab34d6368447fff3d99d690 /usr/lib/frr/nhrpd (mapped at 0x5ab34d621000)
NHRP: frr_sigevent_process+0x53 709878b0df537fff3d99d6a0 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: event_fetch+0x6c5 709878b204057fff3d99d6c0 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: frr_run+0xd3 709878ac81637fff3d99d840 /usr/lib/frr/libfrr.so.0 (mapped at 0x709878a00000)
NHRP: main+0x195 5ab34d6319157fff3d99d960 /usr/lib/frr/nhrpd (mapped at 0x5ab34d621000)
NHRP: __libc_init_first+0x90 709878629d907fff3d99d980 /lib/x86_64-linux-gnu/libc.so.6 (mapped at 0x709878600000)
NHRP: __libc_start_main+0x80 709878629e407fff3d99da20 /lib/x86_64-linux-gnu/libc.so.6 (mapped at 0x709878600000)
NHRP: _start+0x25 5ab34d631b657fff3d99da70 /usr/lib/frr/nhrpd (mapped at 0x5ab34d621000)
Philippe Guibert [Fri, 13 Jan 2023 14:59:52 +0000 (15:59 +0100)]
bgpd: fix labels in adj-rib-in
In a BGP L3VPN context using ADJ-RIB-IN (ie. enabled with
'soft-reconfiguration inbound'), after applying a deny route-map and
removing it, the remote MPLS label information is lost. As a result, BGP
is unable to re-install the related routes in the RIB.
Philippe Guibert [Fri, 24 Feb 2023 10:53:46 +0000 (11:53 +0100)]
topotests: add bgp test to check the ADJ-RIB-IN label value
The test is done on r2. A BGP update is received on r2, and is
filtered on r2. The RIB of r2 does not have the BGP update stored,
but the ADJ-RIB-IN is yet present. To demonstrate this, if the
inbound route-map is removed, then the BGP update should be copied
from the the ADJ-RIB-IN and added to the RIB with the label
value.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com> Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>
Philippe Guibert [Fri, 24 Feb 2023 10:22:14 +0000 (11:22 +0100)]
topotests: add bgp test to check the ADJ-RIB-OUT label value
This test ensures that when r1 changes the label value, then
the new value is automatically propagated to remote peer.
This demonstrates that the ADJ-RIB-OUT to r2 has been correctly
updated.
Signed-off-by: Philippe Guibert <philippe.guibert@6wind.com> Signed-off-by: Louis Scalbert <louis.scalbert@6wind.com>