[dpdk-dev] [RFC v2 0/2] Pseudo-number generation improvements
Mattias Rönnblom
mattias.ronnblom at ericsson.com
Fri Apr 19 23:21:36 CEST 2019
Make rte_rand() multi-thread safe, go faster and produce
better-quality pseudo-random numbers.
v2:
* Removed 32-bit version of rte_rand() and rte_rand_max().
* Switched from a four-sequence LFSR (producing a 32-bit number)
to a five-sequence LFSR (producing a 64-bit number).
* Added a note on generator not being cryptographically secure.
Mattias Rönnblom (2):
eal: replace libc-based random number generation with LFSR
eal: introduce random generator function with upper bound
lib/librte_eal/common/include/rte_random.h | 45 +++---
lib/librte_eal/common/meson.build | 1 +
lib/librte_eal/common/rte_random.c | 157 +++++++++++++++++++++
lib/librte_eal/freebsd/eal/Makefile | 1 +
lib/librte_eal/freebsd/eal/eal.c | 2 -
lib/librte_eal/linux/eal/Makefile | 1 +
lib/librte_eal/linux/eal/eal.c | 2 -
lib/librte_eal/rte_eal_version.map | 3 +
8 files changed, 190 insertions(+), 22 deletions(-)
create mode 100644 lib/librte_eal/common/rte_random.c
--
2.17.1
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