Changes

tcap: Fix return code in tcap_as_rx_sccp_asp()

That code path is not an error, simply the message is not TCAP.

Take the chance to clarify the behavior of the function.

Change-Id: I54c4a1bbaa8e107cf433cc898658a672c2b53c3c

tcap: Lower log level failing to parse msg

invalid rx packets should be logged as NOTICED, not as ERROR.

Change-Id: Idef5736ee2481260f958eece2f5a3bfc009b3d69

tcap: Support TID with length 1..4

As described in ITU Q.773 4.2.1.3:
"The length of a Transaction ID is 1 to 4 octets."

asn.1 files also describe TIDs the following way:
OrigTransactionID ::= [APPLICATION 8] IMPLICIT OCTET STRING (SIZE (1..4) )
DestTransactionID ::=[APPLICATION 9] IMPLICIT OCTET STRING (SIZE (1..4) )

Take the chance to avoid asserting based on received external input msg.

Related: SYS#5423
Change-Id: I2748d85624e4be708f7554ee3e60a5bda9162845

stp: Enable tracking of NULL memory context

Similar to what's done in most of the OsmoCNI programs.
This allows dumpinng the NULL context using VTY command
'show talloc-context all'.

Change-Id: I4a925967e5bb61c346cf6c4dd2c89b6aaea44b94

tcap: Fix wrong address type printed in log line

Change-Id: I28b0d488159d9fa88e69e8c8b2e53a97b461763a