tree 99156a4e36f626b965c72d59476bae95dfc70a63
parent 2585620857a3a6c17b17a65a3d9a863824b8e401
author Jacob Erlbeck <jerlbeck@sysmocom.de> 1421662204 +0100
committer Holger Hans Peter Freyther <holger@moiji-mobile.com> 1421766828 +0100

sgsn: Add SGSN_ERROR_CAUSE_NONE and use it instead of 0

Currently an error_cause of 0 is being used to indicate normal
operation. Albeit this is not a defined GMM cause, the value is not
explicitly reserved.

This commit adds the macro SGSN_ERROR_CAUSE_NONE and uses it for
initialisation (instead of relying on talloc_zero) and comparisons.
The value is set to -1 to be on the safe side. The VTY code is
updated to set the error_cause when using the
'update-subscriber imsi IMSI update-location-result CAUSE' command.

Sponsored-by: On-Waves ehf