All additional release fields are considered optional, and the
CSN_DESCR for Content_t already marks almost all as such, except
DownlinkDualCarrierCapability_r7.
It has been found that some MS transmits a MS RA Capability with a Length=61 bits
where the last bit in the buffer is setting the Exist bit for
DownlinkDualCarrierCapability_r7 as 1. Hence, the CSN1 decoder failed to
decode the whole message because it expected to keep reading there
despite there's no more bytes to read.
While this is could actually be considered an MS bug, let's relax our
expectancies and simply consider the case { 1 <end> } as it was { 0 },
and mark skip decoding DownlinkDualCarrierCapability_r7. That waht
wireshark (packet-gsm_a_gsm.c) or pycrate do for instance.
This patch itself doesn't fix the problem where actually the Exist bit
is stored as 1 in the output decoded structure, but simply allows keep
ongoing with decoding until the end. This issue will be fixed in a
follow-up patch.
Related: SYS#5552
Related: OS#4955
Related: OS#5020
Change-Id: I9a2541bd3544802a646890f32725201836abb0da
Other callback functions are properly specified as per what's in
"typedef CSN_CallBackStatus_t". However, these two were wrong.
Change-Id: I280b51d4c8c38c76cc1ccd49656b6b7bbe769760
According to 3GPP TS 44.004, section 7.4a, two alternative RACH block
formats are specified: 8 bit (1 octet) and 11 bit. This change adds
CSN.1 definitions for 11 bit EGPRS Packet Channel Request as per
3GPP TS 44.060, table 11.2.5a.2.
Change-Id: I96df3352856933c9140177b2801a2c71f4134183
Related: OS#1548
Port from wireshark.git 428ee66ae1c524b49f9043729b1f1e9b4f52f409, from
Pascal Quantin.
The original commit is also changing the RRC_Container field to
M_CALLBACK, but we leave them as M_VAR_ARRAY since the callback is
basically used to add more dissection information in wireshark.
Change-Id: I0f374e78300efddff00c4df26a401adcdee18a12
Port of patch (+ later fixes squashed) of wireshark.git commit
dea5452b95dfaf18e38670a8e2b3b38f9175fdfd, from Lei Chen:
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6856
Squashed wireshark.git fix commits:
774be29de0b4d93d01aecb1518c41d7d551071a9
51c31cd7bd3d8fc196a9f90a8af466ad84e9e6a8
6aca10831f86c562970b13efa811f46e25ee3091
c1ceac58cdb77051e9bd14c1f6f7669cf5779a86
Change-Id: I08523bc1bbdffde479ef974b4c7b56cfa5639591
Original file from wireshark.git (packet-gsm_csn1.c) is being built and
maintained as a C file. There's no real need for us to maintain it as a
C++, and doing so will make both files derive over time (as already
happened). Let's keep it as a C compiler (which btw seems to be more
strict) to make it easier to port patches back and forth wireshark.git.
Take the chance to move some declarations we added to csn1.h to be able
to build it out of wireshark. Let's keep those in a separate header file
to ease looking for differences.
Change-Id: I818a8ae947f002d35142f9f5473454cfd80e1830
Pau Espin
Pau Espin Pedrol
Vadim Yanitskiy