0 means "there is no FCS in the packet data", 4 means "there is an FCS
in the packet data", -1 means "I don't know whether there's an FCS in
the packet data, guess based on the packet size".
Assume that Ethernet encapsulated inside other protocols has no FCS, by
having the "eth" dissector assume that (and not check for an Ethernet
pseudo-header).
Have "ethertype()" take an argument giving the FCS size; pass 0 when
appropriate.
Fix up Wiretap routines to set the pseudo-header. This means we no
longer use the "generic" seek-and-read routine, so get rid of it.
svn path=/trunk/; revision=8574
An Ethernet trailer is only needed to pad the packet to 60 bytes of
Ethernet header plus payload; if the packet has what appears to be a
trailer, and it's 4 or more bytes (i.e., long enough to include an FCS),
and the Ethernet frame was claimed to have 64 or more bytes (i.e., it
has at least an FCS worth of data more than the minimum 60 bytes),
assume that the last 4 bytes of the frame were an FCS.
svn path=/trunk/; revision=8207
equivalents for the toplevel directory. The removal of winsock2.h will
hopefully not cause any problems under MSVC++, as those files using
struct timeval still include wtap.h, which still includes winsock2.h.
svn path=/trunk/; revision=5932
"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
length field rather than an Ethernet type field) into a
"dissect_802_3()" routine.
In that routine, catch exceptions thrown by the IPX or LLC dissector or
dissectors under them, so that the trailer information is added to the
tree even if an exception is thrown (similar to what "ethertype()"
does).
svn path=/trunk/; revision=3002
Guy Harris