[Snort-users] Seg fault with latest pf_ring git

Y M snort at ...15979...
Tue Nov 1 15:49:12 EDT 2016


There used to be two types of drivers: PF_RING aware and ZC. The ZC ones are for PF_RING ZC, which require a license. Looking at the directory now I see the "aware" drivers are not there anymore. So I stand corrected at this point, as I am not sure how would these play with non-ZC PF_RING.


YM

________________________________
From: James Lay <jlay at ...13475...>
Sent: Tuesday, November 1, 2016 10:41:05 PM
To: Y M
Cc: Snort
Subject: Re: [Snort-users] Seg fault with latest pf_ring git

Thanks YM....yea I looked at the drivers, but I think they are only
needed for PF_RING ZC support?  I'm not a pro with pf_ring, so I could
be way off.  I'll fiddle and see what happens..thanks again.

James

On 2016-11-01 13:35, Y M wrote:
> Always happy to help, James.
>
> Odd that suricata works. Just a couple of notes which may not be
> related. I see that you did not compile the pf_ring driver (cd
> drivers/PF_RING_aware/intel/<igb|igbxe>/<version>/src && sudo make
> install). Since part of the error is "pfring_get_card_settings()",
> maybe this is related? A second note is that the "min_num_slots" while
> loading the pfring kernel module, "I believe", is no longer required,
> which is obviously not related to your issue.
>
> I guess Luca is already on top of it.
>
> YM
> -------------------------
>
> FROM: James Lay <jlay at ...13475...>
> SENT: Tuesday, November 1, 2016 10:19:35 PM
> TO: Y M
> CC: Snort
> SUBJECT: Re: [Snort-users] Seg fault with latest pf_ring git
>
> Thanks YM....you're willingness to help always impresses me :)  As for
>
> pf_ring, this was just a git pull...which...is apparently like..uber
> fresh:
>
> commit aa5bf8f7d0662d411465895b8ee8fe8935084a6f
> Author: Luca Deri <deri at ...8215...>
> Date:   Tue Nov 1 10:53:58 2016 +0100
>
> This is just a dev box, so I can wait until it's fixed...oddly,
> suricata
> tests fine:
>
> /opt/suricata/etc/suricata$] sudo suricata --pfring-int=eth0
> --pfring-cluster-id=99 --pfring-cluster-type=cluster_flow -T -c
> /opt/suricata/etc/suricata/suricata.yaml
> 1/11/2016 -- 12:13:38 - <Info> - Running suricata under test mode
> 1/11/2016 -- 12:13:38 - <Notice> - This is Suricata version 3.1.3
> RELEASE
> 1/11/2016 -- 12:13:47 - <Notice> - Configuration provided was
> successfully loaded. Exiting.
>
> pfring config steps:
>
> git clone https://github.com/ntop/PF_RING.git
> cd PF_RING/kernel
> make
> sudo make install
>
> cd ../userland/lib
> ./configure --prefix=/opt/pfring
> sudo make install
>
> cd ../libpcap
> ./configure --prefix=/opt/pfring
> sudo make install
>
> cd ../tcpdump
> ./configure --prefix=/opt/pfring
> sudo make install
>
> cd ../userland/snort/pfring-daq-module
> autoreconf -ivf
> ./configure --with-libpfring-includes=/opt/pfring/include
> --with-libpfring-libraries=/opt/pfring/lib
> make
> sudo cp .libs/daq_pfring.so /usr/local/lib/daq/
>
> modprobe pf_ring enable_tx_capture=1 min_num_slots=32768
>
> snort config line:
> ./configure --prefix=/opt/snort --enable-non-ether-decoders
> --enable-sourcefire --enable-shared-rep --enable-control-socket
> --enable-open-appid --with-libpcap-includes=/opt/pfring/include
> --with-libpcap-libraries=/opt/pfring/lib
> --with-libpfring-includes=/opt/pfring/include
> --with-libpfring-libraries=/opt/pfring/lib
>
> Thanks again.
>
> James
>
> On 2016-11-01 12:44, Y M wrote:
>> A long shot at this, but were all the pf_ring modules (driver,
>> kernel, pfring libpcap, pfring daq) compiled and installed from the
>> recent source? If you revert back to the stable version (apt/yum
>> install), does it work? You can also try uninstalling then make
> clean
>> and make distclean, and recompile again.
>>
>> YM
>> -------------------------
>>
>> FROM: James Lay <jlay at ...13475...>
>> SENT: Tuesday, November 1, 2016 9:03:38 PM
>> TO: Snort
>> SUBJECT: [Snort-users] Seg fault with latest pf_ring git
>>
>> Topic says it.  Config test run:
>>
>> sudo snort --daq-dir=/usr/local/lib/daq --daq pfring  -T -c
>> /opt/snort/etc/snort.conf
>>
>> backtrace:
>>
>> #0  0x00007ffff6b681a8 in pfring_get_card_settings () from
>> /opt/pfring/lib/libpcap.so.1
>> #1  0x00007fffb626cf47 in pfring_daq_initialize (config=<optimized
>> out>,
>> ctxt_ptr=0xf109d0 <daq_hand>, errbuf=0x7fffffffe3c0 "", len=256) at
>> daq_pfring.c:491
>> #2  0x0000000000464050 in DAQ_Config (cfg=0x7fffffffe4f0) at
>> sfdaq.c:515
>> #3  0x0000000000464183 in DAQ_New (sc=0x16879f0, intf=0x557e05 "")
> at
>> sfdaq.c:553
>> #4  0x000000000043ba5d in SnortMain (argc=7, argv=0x7fffffffe678) at
>> snort.c:875
>> #5  0x000000000043b9b3 in main (argc=7, argv=0x7fffffffe678) at
>> snort.c:836
>>
>> sudo snort --daq-dir=/usr/local/lib/daq --daq-list
>> Available DAQ modules:
>> pfring(v1): live inline multi unpriv
>> pcap(v3): readback live multi unpriv
>> ipfw(v3): live inline multi unpriv
>> dump(v3): readback live inline multi unpriv
>> afpacket(v5): live inline multi unpriv
>>
>> Not sure of my next step.
>>
>> James
>>
>>
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