gms_transactions data model reorganization

This changeset factors out gsm_transaction as something independent
of call control in preparation to re-use the code from SMS.  A
transaction is uniquely identified by either its callref, or by
a tuple of (transaction_id, protocol, subscriber).
4 files changed
tree: 502ff81ed73dff97c969d4e3a36f71213e95c461
  1. linux-kernel/
  2. openbsc/
  3. wireshark/