Hi All,
Wanted to update in this thread that I have debugged and found that VPP crash
was due to undefined symbol for vlib_buffer_alloc_from_free_list(), which is
called from router plugin during tap interface enable. I have made the
following code changes in my WS to get this working.
Currently, with this change enabling tap interface works fine.
diff --git a/router/router/tap_inject_node.c b/router/router/tap_inject_node.c
index 8282c4c..8ce3cf9 100644
--- a/router/router/tap_inject_node.c
+++ b/router/router/tap_inject_node.c
@@ -202,9 +202,15 @@ tap_rx (vlib_main_t * vm, vlib_node_runtime_t * node,
vlib_frame_t * f, int fd)
{
u32 len = vec_len (im->rx_buffers);
+#if 0
len = vlib_buffer_alloc_from_free_list (vm,
&im->rx_buffers[len], NUM_BUFFERS_TO_ALLOC,
VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
+#endif
+
+ len = vlib_buffer_alloc_on_numa (vm,
+ &im->rx_buffers[len], NUM_BUFFERS_TO_ALLOC,
+ vm->numa_node);
_vec_len (im->rx_buffers) += len;
Thanks,
Kausik
From: Majumdar, Kausik <kausik.majum...@commscope.com>
Sent: Wednesday, March 4, 2020 3:56 PM
To: vpp-dev <vpp-dev@lists.fd.io>
Cc: Majumdar, Kausik <kausik.majum...@commscope.com>
Subject: VPP with FRR Bring-up - tap interface enable causing crash
Hi All,
I am experiencing VPP crash when I am trying to bring the link up for the VPP
tap interfaces in Linux. Is this a known issue ? I have tried it few items to
bring the VPP tap interfaces link up and each time I see VPP crashing. Please
let me know if there is any workaround.
vpp# show interface
Name Idx State MTU (L3/IP4/IP6/MPLS)
Counter Count
TenGigabitEthernet7/0/0 1 down 9000/0/0/0
TenGigabitEthernet7/0/1 2 down 9000/0/0/0
local0 0 down 0/0/0/0
vpp#
vpp# set interface state TenGigabitEthernet7/0/0 up
vpp# set interface state TenGigabitEthernet7/0/1 up
vpp# set interface ip address TenGigabitEthernet7/0/0 10.0.10.2/24
vpp# set interface ip address TenGigabitEthernet7/0/1 10.0.20.2/24
vpp# show tap
tap tap-inject
vpp# show tap-inject
TenGigabitEthernet7/0/0 -> vpp0
TenGigabitEthernet7/0/1 -> vpp1
vpp#
# ip addr add 10.0.10.2/24 dev vpp0
# ip addr add 10.0.20.2/24 dev vpp1
# ip link set dev vpp0 up
# ip link set dev vpp1 up
Cannot find device "vpp1"
#
/var/log/syslog -
Mar 4 13:38:13 root NetworkManager[1175]: <info> [1583357893.7966] manager:
(vpp0): new Tun device (/org/freedesktop/NetworkManager/Devices/30)
Mar 4 13:38:13 root NetworkManager[1175]: <info> [1583357893.8181] devices
added (path: /sys/devices/virtual/net/vpp0, iface: vpp0)
Mar 4 13:38:13 root NetworkManager[1175]: <info> [1583357893.8181] device
added (path: /sys/devices/virtual/net/vpp0, iface: vpp0): no ifupdown
configuration found.
Mar 4 13:38:13 root NetworkManager[1175]: <info> [1583357893.8221] manager:
(vpp1): new Tun device (/org/freedesktop/NetworkManager/Devices/31)
Mar 4 13:38:13 root NetworkManager[1175]: <info> [1583357893.8423] devices
added (path: /sys/devices/virtual/net/vpp1, iface: vpp1)
Mar 4 13:38:13 root NetworkManager[1175]: <info> [1583357893.8423] device
added (path: /sys/devices/virtual/net/vpp1, iface: vpp1): no ifupdown
configuration found.
Mar 4 13:41:07 root avahi-daemon[1097]: Joining mDNS multicast group on
interface vpp0.IPv4 with address 10.0.10.2.
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6687] device
(vpp0): state change: unmanaged -> unavailable (reason 'connection-assumed')
[10 20 41]
Mar 4 13:41:07 root avahi-daemon[1097]: New relevant interface vpp0.IPv4 for
mDNS.
Mar 4 13:41:07 root avahi-daemon[1097]: Registering new address record for
10.0.10.2 on vpp0.IPv4.
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6701] keyfile:
add connection in-memory (48ac355a-b5dd-4099-8ece-7b9137770887,"vpp0")
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6711] device
(vpp0): state change: unavailable -> disconnected (reason 'connection-assumed')
[20 30 41]
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6726] device
(vpp0): Activation: starting connection 'vpp0'
(48ac355a-b5dd-4099-8ece-7b9137770887)
Mar 4 13:41:07 root vpp[18936]: /usr/bin/vpp: symbol lookup error:
/usr/lib/x86_64-linux-gnu/vpp_plugins/router.so: undefined symbol:
vlib_buffer_alloc_from_free_list
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6793] device
(vpp0): state change: disconnected -> prepare (reason 'none') [30 40 0]
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6803] device
(vpp0): state change: prepare -> config (reason 'none') [40 50 0]
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6822] device
(vpp0): state change: config -> ip-config (reason 'none') [50 70 0]
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6925] device
(vpp0): state change: ip-config -> ip-check (reason 'none') [70 80 0]
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6932] devices
removed (path: /sys/devices/virtual/net/vpp1, iface: vpp1)
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6937] device
(vpp0): state change: ip-check -> secondaries (reason 'none') [80 90 0]
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6941] device
(vpp0): state change: secondaries -> activated (reason 'none') [90 100 0]
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.6950] device
(vpp0): Activation: successful, device activated.
Mar 4 13:41:07 root dbus[1099]: [system] Activating via systemd: service
name='org.freedesktop.nm_dispatcher'
unit='dbus-org.freedesktop.nm-dispatcher.service'
Mar 4 13:41:07 root avahi-daemon[1097]: Interface vpp0.IPv4 no longer relevant
for mDNS.
Mar 4 13:41:07 root avahi-daemon[1097]: Leaving mDNS multicast group on
interface vpp0.IPv4 with address 10.0.10.2.
Mar 4 13:41:07 root systemd[1]: Starting Network Manager Script Dispatcher
Service...
Mar 4 13:41:07 root avahi-daemon[1097]: Withdrawing address record for
10.0.10.2 on vpp0.
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.7374] device
(vpp0): state change: activated -> unmanaged (reason 'unmanaged') [100 10 3]
Mar 4 13:41:07 root NetworkManager[1175]: <info> [1583358067.7401] devices
removed (path: /sys/devices/virtual/net/vpp0, iface: vpp0)
Mar 4 13:41:07 root dbus[1099]: [system] Successfully activated service
'org.freedesktop.nm_dispatcher'
Mar 4 13:41:07 root systemd[1]: Started Network Manager Script Dispatcher
Service.
Mar 4 13:41:07 root nm-dispatcher: req:1 'up' [vpp0]: new request (1 scripts)
Mar 4 13:41:07 root nm-dispatcher: req:1 'up' [vpp0]: start running ordered
scripts...
Mar 4 13:41:07 root nm-dispatcher: req:2 'down' [vpp0]: new request (1 scripts)
Mar 4 13:41:07 root systemd[1]: vpp.service: Main process exited, code=exited,
status=127/n/a
Mar 4 13:41:07 root systemd[1]: vpp.service: Unit entered failed state.
Mar 4 13:41:07 root systemd[1]: vpp.service: Failed with result 'exit-code'.
Mar 4 13:41:07 root systemd[1]: Reloading OpenBSD Secure Shell server.
Mar 4 13:41:07 root systemd[1]: Reloaded OpenBSD Secure Shell server.
Mar 4 13:41:07 root systemd[1]: vpp.service: Service hold-off time over,
scheduling restart.
Mar 4 13:41:07 root systemd[1]: Stopped vector packet processing engine.
Mar 4 13:41:07 root systemd[1]: Starting vector packet processing engine...
Thanks,
Kausik
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