osmo-pcap.git branch master updated. 0.0.4-4-gb7a834b

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gitosis at osmocom.org gitosis at osmocom.org
Thu Sep 10 14:56:05 UTC 2015


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The branch, master has been updated
       via  b7a834b4cb6a0cdd53d4fb06c1981e8d2af1c949 (commit)
      from  07d96eb65441e46647d05e690c557ed3c14cb79b (commit)

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http://cgit.osmocom.org/osmo-pcap/commit/?id=b7a834b4cb6a0cdd53d4fb06c1981e8d2af1c949

commit b7a834b4cb6a0cdd53d4fb06c1981e8d2af1c949
Author: Holger Hans Peter Freyther <holger at moiji-mobile.com>
Date:   Thu Sep 10 16:45:45 2015 +0200

    gprs: Add a custom GPRS filter
    
    Allow to inspect UDP messages and check for GPRS, NS, BSSGP
    and then filter LLC frames. Parsing the vL datastructure with
    the libpcap syntax is a pain. It could be done using BPF but
    we do not want to use bpf asm to specify the entire ruleset.
    
    I looked into using libepan/libwireshark but this has memory
    issues and is painful too. So let's parse UDP, NS, BSSGP using
    the info we already have. I tried a bit of editcap to generate
    a bit of broken data. The length check might still be bad.
    
    I used my crash_20100602.pcap file to count the LLC frames we
    detect and compare that to wireshark it ended with the right
    number.
    
      pcap add-filter gprs
    
    can be used to enable the new filtering option after the OS
    has received the packet.
    
    Fixes: ONW#1314

-----------------------------------------------------------------------

Summary of changes:
 configure.ac                         |   1 +
 include/osmo-pcap/osmo_pcap_client.h |   1 +
 src/Makefile.am                      |   2 +-
 src/osmo_client_core.c               | 119 +++++++++++++++++++++++++++++++++++
 src/osmo_client_vty.c                |  23 +++++++
 5 files changed, 145 insertions(+), 1 deletion(-)


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