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| author | Jacob Erlbeck <jerlbeck@sysmocom.de> | 2015-01-15 18:51:31 +0100 |
|---|---|---|
| committer | Holger Hans Peter Freyther <holger@moiji-mobile.com> | 2015-01-20 16:13:01 +0100 |
| commit | d8a65536ecc6eae026898822b58f520f5ee25ac7 (patch) | |
| tree | 8ef08da366039ba63114944da13b195272557fb8 /README | |
| parent | 87c7ffccea5fb8a579ade220e6e4754f857e4ecc (diff) | |
sgsn: Fix P-TMSI generator's distance of equal values
Currently sgsn_alloc_ptmsi uses rand() to get a new P-TMSI and then
sets to upper 2 MSB. Therefore there is no lower limit of the
distance between 2 identical P-TMSI.
This patch changes the implementation to discard any random value
above 2^30 and to generate a new random number in that case until a
fitting number is found (or a repetition limit is reached). This way,
all number below 2^30 within the PRNG's period are used.
Ticket: OW#1362
Sponsored-by: On-Waves ehf
Diffstat (limited to 'README')
0 files changed, 0 insertions, 0 deletions