tree b0d6d66b7511cbd52a8204bb19535732e14f2d65
parent 9759374adbb632ff5f8a4b739e0f62a9c9017622
author Max <msuraev@sysmocom.de> 1467724752 +0200
committer Harald Welte <laforge@gnumonks.org> 1468703010 +0000

SGSN: use unique AUTH REQ reference

The A&C reference number specified in 3GPP TS 24.008 § 10.5.5.19
identifies particular request sent by network with the related response
sent by MS. The value transparently copied from request to response by
MS: the spec do not specify what exactly should be in there so we use
rand() to decrease chance for collisions.

Note: variable named 'rand' clashes with standard function rand() so it
was renamed.

Change-Id: I3638821a9b4a0532b28dbbb50faa30c4082579f6
Related: OS#1582