gsm48_tx_mm_auth_req(): support UMTS AUTN

To be able to do R99 UMTS authentication, we need to send along AUTN bytes in
the Authentication Request. Add autn parameter to gsm48_tx_mm_auth_req() and
conditionally append the R99 AUTN TLV to the Authentication Request message.

Change-Id: I0d644559088706aa06b42b9bfe1f8c21ca6fa4da
3 files changed
tree: 7ec22920dd1b259aa03f34b91bdde70af5e15a5a
  1. contrib/
  2. debian/
  3. openbsc/
  4. .gitignore
  5. .gitreview
  6. .mailmap