gprs: Add replies for all GSUP requests

Currently, an incoming GSUP request message isn't answered at all if
it is not handled due to an error or missing implementation.

This patch adds GSUP error replies for these requests (and only for
requests). It also adds tests for these cases.

Note that several of these tests check for
GMM_CAUSE_MSGT_NOTEXIST_NOTIMPL, which will have to be changed, when
the features are implemented.

Sponsored-by: On-Waves ehf
4 files changed
tree: 8a36aa017edd261de9a31631eef62a878faf7c7e
  1. debian/
  2. hlrsync/
  3. linux-kernel/
  4. openbsc/
  5. wireshark/
  6. README