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Bug #10436

open

softflowd no longer sends flow data after upgrade (v0.9.9_1 -> v1.0.0)

Added by Mark Hassman over 1 year ago. Updated 4 months ago.

Status:
New
Priority:
Normal
Assignee:
-
Category:
softflowd
Target version:
-
Start date:
04/06/2020
Due date:
% Done:

0%

Estimated time:
Plus Target Version:
Affected Version:
2.4.5
Affected Plus Version:
Affected Architecture:
SG-3100

Description

Hi, after upgrading pfsense from v2.4.4_3 -> v2.4.5 (which included an upgrade of softflowd from v0.9.9_1 -> v1.0), softflowd no longer sends flows to receiver. Running softflowd with -D produces debug output of adding flows, but the netflow receiver never receives data. I've confirmed this with tcpdump on the source netgate device and destination netflow receiver - softflowd isn't generating reporting packets on the wire.

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 #1

Updated by Manuel Piovan over 1 year ago

me too
can you try with the flag -P udp from console and report back?
example /usr/local/bin/softflowd -D -i 1:vmx1 -n 192.168.10.202:2055 -v 5 -T ether -A sec -p /var/run/softflowd.vmx1.pid -c /var/run/softflowd.vmx1.ctl -P udp

-P udp|tcp|sctp         Specify transport layer protocol for exporting packets
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 #2

Updated by Mark Hassman over 1 year ago

Manuel Piovan wrote:

me too
can you try with the flag -P udp from console and report back?
example /usr/local/bin/softflowd -D -i 1:vmx1 -n 192.168.10.202:2055 -v 5 -T ether -A sec -p /var/run/softflowd.vmx1.pid -c /var/run/softflowd.vmx1.ctl -P udp

-P udp|tcp|sctp Specify transport layer protocol for exporting packets

Hi Manuel, unfortunately, no change - still zero netflow packets sent to receiver:
/usr/local/bin/softflowd -i 1:mvneta1 -n 192.168.x.x:9995 -v 9 -T full -A sec -p /var/run/softflowd.mvneta1.pid -c /var/run/softflowd.mvneta1.ctl -P udp

I also noticed after a day of running, softflowd processes are dying. I run softflow on 3 vlans - checked today, only one was still active. So, decided to run it for longer duration in debug mode: -D:
...
ADD FLOW seq:300 [192.168.x.x]:161 <> [192.168.x.x]:56916 proto:17 vlan>:0 vlan<:0 ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:301 [192.168.x.x]:161 <> [192.168.x.x]:56917 proto:17 vlan>:0 vlan<:0 ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:302 [192.168.x.x]:37596 <> [x.x.x.x]:993 proto:6 vlan>:0 vlan<:0 ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
Starting expiry scan: mode 0
Queuing flow seq:6 (0x206a0640) for expiry reason 2
Queuing flow seq:21 (0x206a10e0) for expiry reason 2
Queuing flow seq:43 (0x206aed20) for expiry reason 2
Queuing flow seq:44 (0x206aec80) for expiry reason 2
Queuing flow seq:46 (0x206aeb40) for expiry reason 2
Queuing flow seq:47 (0x206aeaa0) for expiry reason 2
Queuing flow seq:48 (0x206aea00) for expiry reason 2
Queuing flow seq:49 (0x206ae960) for expiry reason 2
Queuing flow seq:50 (0x206ae8c0) for expiry reason 2
Queuing flow seq:52 (0x206ae780) for expiry reason 2
Queuing flow seq:77 (0x206c1fe0) for expiry reason 2
Queuing flow seq:78 (0x206c1f40) for expiry reason 2
Queuing flow seq:79 (0x206c1ea0) for expiry reason 2
Queuing flow seq:82 (0x206c1cc0) for expiry reason 2
Queuing flow seq:83 (0x206c1c20) for expiry reason 2
Queuing flow seq:84 (0x206c1b80) for expiry reason 2
Queuing flow seq:86 (0x206c1a40) for expiry reason 2
Queuing flow seq:87 (0x206c19a0) for expiry reason 2
Queuing flow seq:89 (0x206c1860) for expiry reason 2
Finished scan 19 flow(s) to be evicted
Flow 2/0: r 0 offset 371 ie 0004 len 84(0x0054)
Flow 2/1: r 0 offset 451 ie 0004 len 164(0x00a4)
Flow 2/2: r 0 offset 531 ie 0004 len 244(0x00f4)
Flow 2/3: r 0 offset 611 ie 0004 len 324(0x0144)
Flow 2/4: r 0 offset 691 ie 0004 len 404(0x0194)
Flow 2/5: r 0 offset 771 ie 0004 len 484(0x01e4)
Flow 2/6: r 0 offset 851 ie 0004 len 564(0x0234)
Flow 2/7: r 0 offset 931 ie 0004 len 644(0x0284)
Flow 2/8: r 0 offset 1011 ie 0004 len 724(0x02d4)
Flow 2/9: r 0 offset 1091 ie 0004 len 804(0x0324)
Flow 2/10: r 0 offset 1171 ie 0004 len 884(0x0374)
Flow 2/11: r 0 offset 1251 ie 0004 len 964(0x03c4)
Flow 2/12: r 0 offset 1331 ie 0004 len 1044(0x0414)
Flow 2/13: r 0 offset 1411 ie 0004 len 1124(0x0464)
Segmentation fault (core dumped)

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 #3

Updated by Chris Norris about 1 year ago

Mark Hassman wrote:

Hi, after upgrading pfsense from v2.4.4_3 -> v2.4.5 (which included an upgrade of softflowd from v0.9.9_1 -> v1.0), softflowd no longer sends flows to receiver. Running softflowd with -D produces debug output of adding flows, but the netflow receiver never receives data. I've confirmed this with tcpdump on the source netgate device and destination netflow receiver - softflowd isn't generating reporting packets on the wire.

Same issue for me. Packet capture shows no Netflow packets being sent by the firewall.

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 #4

Updated by Nigel Smith 5 months ago

Same issue for me also. No flows being exported from the firewall as reported by capture on the firewall. Any ideas on next steps to nudge this forward?

Below is the -D output (I've replaced the IPs manually before posting).

# /usr/local/bin/softflowd -D -P udp -i pppoe0 -n x.x.x.x:2055 -v 9 -T proto -A milli -p /var/run/softflowd.pppoe0.pid -c /var/run/softflowd.pppoe0.ctl
Using pppoe0 (idx: 0)
softflowd v1.0.0 starting data collection
Exporting flows to [x.x.x.x]:2055
ADD FLOW seq:1 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:2 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:1 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:3 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:4 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:1 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:5 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:6 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:7 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:8 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:9 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:10 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:11 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:12 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:13 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:14 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:15 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:16 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:17 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:18 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:19 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:20 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:21 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:58 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:22 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:23 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:24 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:25 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:26 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:27 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:28 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:29 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:30 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:31 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:32 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:33 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:34 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:35 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:36 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:37 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:38 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:39 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:40 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:41 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:42 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:43 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:44 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:17 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:45 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:46 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:47 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:48 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:49 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:50 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:51 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:52 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:53 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:54 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:55 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:56 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:57 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:58 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:59 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:60 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:61 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
ADD FLOW seq:62 [x.x.x.x]:0 <> [x.x.x.x]:0 proto:6 vlan>:0 vlan<:0  ether:00:00:00:00:00:00 <> 00:00:00:00:00:00
Starting expiry scan: mode 0
Queuing flow seq:11 (0x4027d370) for expiry reason 4
Finished scan 1 flow(s) to be evicted
Flow 2/0: r 0 offset 387 ie 0004 len 100(0x0064)
Segmentation fault (core dumped)
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 #6

Updated by Viktor Gurov 4 months ago

same crash on pfSense 21.02-p2 (SG-3100):

/usr/local/bin/softflowd -D -i 1:mvneta1 -n 192.168.88.41:9995 -v 9 -T full -A sec -p /var/run/softflowd.mvneta1.pid -c /var/run/softflowd.mvneta1.ctl -P udp
Using ue0 (idx: 1)
softflowd v1.0.0 starting data collection
Exporting flows to [192.168.88.41]:9995
ADD FLOW seq:1 *****
...
Starting expiry scan: mode 0
Queuing flow seq:49 (0x20365960) for expiry reason 2
Finished scan 1 flow(s) to be evicted
Flow 1/0: r 0 offset 331 ie 0004 len 44(0x002c)
Segmentation fault (core dumped)

works fine on FreeBSD 13:

Frame 2: 734 bytes on wire (5872 bits), 734 bytes captured (5872 bits)
Ethernet II, Src: aa:94:a6:cd:4b:42 (aa:94:a6:cd:4b:42), Dst: 4e:49:f0:fe:bf:12 (4e:49:f0:fe:bf:12)
Internet Protocol Version 4, Src: 192.168.88.201, Dst: 192.168.88.41
User Datagram Protocol, Src Port: 52611, Dst Port: 9995
    Source Port: 52611
    Destination Port: 9995
    Length: 700
    Checksum: 0x406e [unverified]
    [Checksum Status: Unverified]
    [Stream index: 0]
Cisco NetFlow/IPFIX
    Version: 9
    Count: 692
    SysUptime: 502.695000000 seconds
    Timestamp: Jun  2, 2021 17:04:01.000000000 MSK
        CurrentSecs: 1622642641
    FlowSequence: 89
    SourceId: 0
    FlowSet 1 [id=1024]
    FlowSet 2 [id=2049]
    FlowSet 3 [id=1024]

FreeBSD fbsd 13.0-RELEASE FreeBSD 13.0-RELEASE #0 releng/13.0-n244733-ea31abc261f: Fri Apr 9 04:24:09 UTC 2021 :/usr/obj/usr/src/amd64.amd64/sys/GENERIC amd64

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