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* The mysterious two bytes were just the FCS. Use the length field fromGuy Harris2002-07-151-2/+12
| | | | | | | | | the IP header as the reported length again, but make the actual length be the minimum of the length of the tvbuff and the reported length, just to keep from having a weird tvbuff that has more data than the packet has. svn path=/trunk/; revision=5876
* Make the reported length of the VJ-uncompressed tvbuff the reportedGuy Harris2002-07-141-2/+2
| | | | | | | | | | | | length of the data in the PPP packet, not the value from the IP header, just in case there's extra crap at the end. (That appears to be the case in at least one pppdump capture filel; that's probably either a bug in the version of pppdump that produced the capture or in the pppdump reading code, but, until we fix that, if we can, let's at least get this right, so that the reported length of the tvbuff won't be less than the length unless that was the case for the tvbuff handed to us.) svn path=/trunk/; revision=5868
* Get rid of the "data_src" member of the "frame_data" structure; put itGuy Harris2002-06-041-3/+3
| | | | | | | | in the "packet_info" structure instead, as we don't need a pointer for every single frame in the capture file, just for each frame for which we currently have an open "epan_dissect_t". svn path=/trunk/; revision=5614
* Dissect the headers of VJ compressed packets even if decompression isGuy Harris2002-05-221-29/+33
| | | | | | turned off or we don't know the direction of the traffic. svn path=/trunk/; revision=5522
* Maintain separate "discard compressed frames" state per connection.Guy Harris2002-05-221-222/+198
| | | | | | | | | | | | | | | | | | | | | | | | Put the array of connection states into the per-direction state structure; its size is fixed, as the connection number field size is 1 byte. Get rid of the "rslot_limit" member, as the number is fixed. Get rid of the per-state "next" pointer, as it's unused. Process uncompressed frames even if VJ decompression is turned off, and even if the "discard compressed frames" flag is set on the connection, as there's no decompression to do. If the full IP and TCP header isn't available in an uncompressed frame, discard subsequent compressed frames. Only use the "discard compressed frames" flag on the first pass through the capture; on subsequent passes, the presence of an "uncompressed header" item attached to the frame indicates whether we could decompress it or not (the "discard compressed frames" flag would merely indicate the *last* state it had for that connection, which might not have been the state at the time we saw that frame). svn path=/trunk/; revision=5520
* Don't include the FCS in the tvbuff handed to "dissect_ppp_common()", soGuy Harris2002-05-201-254/+508
| | | | | | | | | | | | | | | | | that it's not included in the tvbuff handed to subdissectors. Use that tvbuff to compute the FCS. Properly handle the FCS in frames that don't include all the captured data. In VJ-compressed packets, put the VJ compression information into the protocol tree, and set the Protocol and Info columns, and don't worry about the CRC - as per the above, it's no longer in the tvbuff (and never *was* in the tvbuff in some cases). Also, clean up some other stuff in the VJ dissector. svn path=/trunk/; revision=5510
* Set the Info column for compressed and uncompressed TCP.Guy Harris2002-05-181-2/+14
| | | | svn path=/trunk/; revision=5504
* From Joerg Mayer: get rid of some unused variables and arguments.Guy Harris2002-04-141-8/+3
| | | | | | | Use "tvb_get_ntohs()" to fetch the checksum from a VJ compressed packet, rather than doing the ntoh by hand. svn path=/trunk/; revision=5163
* Don't give tvbuffs names; instead, give data sources names, where aGuy Harris2002-02-181-53/+25
| | | | | | | | | | | | | | | "data source" has a name and a top-level tvbuff, and frames can have a list of data sources associated with them. Use the tvbuff pointer to determine which data source is the data source for a given field; this means we don't have to worry about multiple data sources with the same name - the only thing the name does is label the notebook tab for the display of the data source, and label the hex dump of the data source in print/Tethereal output. Clean up a bunch of things discovered in the process of doing the above. svn path=/trunk/; revision=4749
* Include files from the "epan" directory and subdirectories thereof withGuy Harris2002-01-211-2/+2
| | | | | | | | | | | | | "epan/..." pathnames, so as to avoid collisions with header files in any of the directories in which we look (e.g., "proto.h", as some other package has its own "proto.h" file which it installs in the top-level include directory). Don't add "-I" flags to search "epan", as that's no longer necessary (and we want includes of "epan" headers to fail if the "epan/" is left out, so that we don't re-introduce includes lacking "epan/"). svn path=/trunk/; revision=4586
* From Irfan Khan: don't use bitfields.Guy Harris2002-01-101-47/+26
| | | | svn path=/trunk/; revision=4517
* Again, leave the SET_ADDRESS() stuff for IP to the IP dissector.Guy Harris2001-12-201-17/+1
| | | | svn path=/trunk/; revision=4431
* Make the object attached to a frame for VJ decompression be a structureGuy Harris2001-12-191-32/+39
| | | | | | | | | | | | containing a 4-byte offset and 128 bytes of data, rather than a 1-byte offset and 128 bits of data, so that the data is aligned on a 4-byte boundary and doesn't upset processors with strict alignment requirements. We don't free individual memory chunks containing those objects, so make the memory chunk pool an "allocate-only" pool. svn path=/trunk/; revision=4428
* Van Jacobson decompression support for PPP, from Irfan Khan.Guy Harris2001-12-191-0/+711
svn path=/trunk/; revision=4427
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