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Laurent THOMAS a1b4220a91 Exclusively use OAI_RNGSEED env variable everywhere

Hide normal table initialization of Ziggurat generator from outside to
force the usage of randominit() for RNG initialization. In this step,
remove the randominit() seed parameter and only rely on OAI_RNGSEED for
a consistent RNG initialization, as this parameter was used differently
("0" as fixed number or to force a random seed).

Now, only use OAI_RNGSEED env variable to force the usage of a fixed
seed.

2025-12-01 12:10:31 +01:00

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Environment variables

OAI uses/supports a number of environment variables, documented in the following:

NFAPI_TRACE_LEVEL: set the nfapi custom logging framework's log level; can be one of error, warn, note, info, debug. Default is warn.
NR_AWGN_RESULTS_DIR: directory containing BLER curves for NR L2simulator channel modelling in SISO case
NR_MIMO2x2_AWGN_RESULTS_DIR: directory containing BLER curves for NR L2simulator channel modelling in 2x2 MIMO case
OPENAIR_DIR: should point to the root directory of OpenAirInterface; BLER curves for LTE L2sim channel emulation
NVRAM_DIR: directory to read/write NVRAM data in (5G) nvram tool; if not defined, will use PWD (working directory)
OAI_CONFIGMODULE: can be used to pass the configuration file instead of -O
OAI_GDBSTACKS: if defined when hitting an assertion (DevAssert(), AssertFatal(), ...), OAI will load gdb and provide a backtrace for every thread
OAI_RNGSEED: provide a fixed seed for random number generators (RNG). If this variable is absent, a random seed will be read (from /dev/urandom).
USIM_DIR: directory to read/write USIM data in (4G) usim tool; if not defined, will use PWD (working directory)

Furthermore, these variables appear in code that is not maintained and maybe not even compiled anywhere:

HOST: alternative host to connect to, for CLI, if neither REMADDR nor SSH_CLIENT are defined
REMADDR: host to connect to, for CLI client
SSH_CLIENT: alternative host to connect to, for CLI, if REMADDR is not defined
USER: user name in the command-line interface
rftestInputFile: input file for the calibration_test tool
OPENAIR2_DIR : OMV and OMG modules, obsolete
TITLE: OTG module, obsolete

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Environment variables

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