The gsm rlcmac dissector truncates the 12 bit BSNs to 8 bits when storing them.
Fix this and the handling of BSN2 is refactored to clarify the difference between BSN2 (the stored value) and BSN2_offset (the value transferred at the air interface).
svn path=/trunk/; revision=46301
Fix pedantic compiler warnings in csn.1 dissectors.
There is some tricky casting going on in csn.1 structures. To eliminate all
the warnings, the function pointers needed to be moved out of the object
pointer unions. Fortunately macros (mostly) hide these changes from the
protocol dissector tables.
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7686
svn path=/trunk/; revision=44899
Interface based on header type rather than MCS.
passes in the header type for EGPRS packets.
This makes sense because in a real protocol stack, the header type is encoded
in the burst stealing bits, allowing the header can be decoded, giving the CPS
IE, which then allows the data blocks to be decoded, so wireshark now follows
the same practice.
I found that there was a (previously overlooked) alignment error in decoding
the last octet of some headers due to the last "octet" having less than 8 bits,
and both the protocol stacks I have here assume that the left-hand bits are
missing (as per the figures in 44.060). I corrected this by making a small
extension to the NULL encoding in packet-csn.[ch] to allow a NULL field to
consume more than 0 bits.
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=7615
svn path=/trunk/; revision=44805
a patch which improves several aspects of GSM RLS/MAC
dissection.
Generic improvements to the csn.1 dissector include:
• Added a flag to the type descriptor structure so that any type can
(potentially) flagged as xxx_OR_NULL. This was specifically needed for
UINT_OR_NULL for the ms capabilities struct.
• Corrected the octet calculation in app of the proto_tree_add_text() and
proto_item_set_len() calls.
• Changed the CSN_SERIALIZE so that the length of the length field can be
specified.
• For CSN_NEXT_EXIST removed the requirement that the next type be CSN_END,
to allow truncation of multiple IEs.
• For CSN_LEFT_ALIGNED_VAR_BITMAP corrected the handling of bit_offset.
• Added a new type CSN_PADDING_BITS to make inspection of padding bits more
convenient.
• Improved the CSN_RECURSIVE_TARRAY_1 to show the array index.
Improvements to the gsm_rlcmac dissector include:
• Comment out a couple of unused hf variables.
• Rework the definition of EGPRS Ack/Nack Description so that the length IE
(and absence thereof) is handled correctly. This is the original issue for
which the bug was raised.
• Added Padding Bits definitions to all PDUs
• Change the Multislot_capability_t and Content_t definitions to allow
truncation at any IE
• Added proto_tree_add_protocol_format() calls so that the protocol can be
added to a display filter
• Append Protocol to the PROTOCOL column and PDU type to the INFO column.
From me get rid of C++ style comments.
https://bugs.wireshark.org/bugzilla/show_bug.cgi?id=6375
svn path=/trunk/; revision=40627
- added documentation in packet-csn1.h
- fixed a bug in packet-csn1.c
- fixed a BSIC description in packet-gsm_a_rr.c
- removed the "_v" suffix in packet-gsm_rlcmac element description
svn path=/trunk/; revision=36284
Alexis La Goutte