tcp: display calculated checksum

While debugging a network issue, I found incorrect TCP checksums. These
are shown in the packet details, but are not available as column. This
patch adds the "tcp.checksum_calculated" field which is only available
if a checksum can be calculated (i.e., checksumming is enabled and the
full segment is available).

The fields are added separately for each checksum case to make it appear
before "Checksum Bad/Good" and to avoid calculating the expected field
value for the "good" cases.

Change-Id: I36af7894d526382ef636c5fa51e74871212b2909
Reviewed-on: https://code.wireshark.org/review/1627
Reviewed-by: Pascal Quantin <pascal.quantin@gmail.com>
Reviewed-by: Alexis La Goutte <alexis.lagoutte@gmail.com>

0 files changed, 0 insertions, 0 deletions