proto: add debugging for protocol context updates

Add a new debugging level to debug updates to the protocol context.

Sample output:

<cmdline>:1:15-23: Evaluate
filter output tcp dport ssh
              ^^^^^^^^^
tcp

update transport layer protocol context:
 link layer          : none
 network layer       : ip
 transport layer     : tcp <-

Signed-off-by: Patrick McHardy <kaber@trash.net>

0 files changed, 0 insertions, 0 deletions