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packets, using the reassembly ID and the frame number of the final frame
as the key. There is no guarantee that reassembly IDs won't be reused,
even when talking between the same source and destination address; if,
once reassembly is complete, the "fragment_data" structure is moved to
the latter hash table, this will keep reused reassembly IDs from causing
mis-reassembly.
Add a routine "fragment_add_seq_check()", which
if a fragment has the "more fragments" flag not set but is the
first fragment of a reassembly, treats that as a non-fragmented
frame, allocating a "fragment_data" structure for the reassembly
but not attaching any fragment to it, and adding it to a
reassembled packet list;
if a packet has been reassembled, removes it from the table of
reassemblies and moves it to the table of reassembled packets;
if the frame's been seen already, looks it up in the table of
reassembled packets rather than the table of reassemblies.
Add reassembly support for fragmented 802.11 frames. Use
"fragment_add_seq_check()" to cope with the fact that some
hardware+drivers apparently hands us reassembled frames with a non-zero
fragment number and the "more fragments" bit clear (as if it puts the
802.11 header of the *last* fragment onto the reassembled data).
svn path=/trunk/; revision=5177
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"frag_number", to make it clearer that it's not a byte offset but a
sequence number.
svn path=/trunk/; revision=5175
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reassembled TCP data being able to indicate that they need still more
reassembly, so that, for example, a dissector can indicate that it needs
reassembly in order to dissect a header that says how long the PDU is
and, when that reassembly is done and it dissects the header, it can
then indicate that it needs more reassembly to get the entire PDU.
svn path=/trunk/; revision=4694
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fragments are identified by block sequence numbers and not byte offsets.
svn path=/trunk/; revision=4398
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Add a few small functions to reassemble.c to cope with protocols
where the total length of defragmented PDUs are specified in the
first fragment (all previous uses of reassembly has been for
PDUs where the last fragment is signalled by a flag in the
header for the last fragment).
Add a few small functions to reassemble.c to abort-and-delete
defragmentation of PDUs and also detect IF a PDU is currently
being defragmented. (Useful for PDUs where the "unique"
identifier is rather ununique, or may be reused often enough so
it can be a problem for Ethereal.)
Change where NT Cancel presents its Cancelation-to output, and
makes the three trans secondary requests also output similar
information.
svn path=/trunk/; revision=4255
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"reassemble.h", and remove IPv4 dependencies from it.
Use it for OSI CLNP segment reassembly as well.
svn path=/trunk/; revision=3525
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