From 7286b2518ec8e4398b512ce95def9166a7af2e4a Mon Sep 17 00:00:00 2001 From: Deepak S Date: Thu, 13 Jul 2017 21:26:50 -0700 Subject: Adding PROX(Packet pROcessing eXecution engine) VNF to sampleVNF JIRA: SAMPLEVNF-55 PROX is a DPDK-based application implementing Telco use-cases such as a simplified BRAS/BNG, light-weight AFTR... It also allows configuring finer grained network functions like QoS, Routing, load-balancing... (We are moving PROX version v039 to sampleVNF https://01.org/intel-data-plane-performance-demonstrators/prox-overview) Change-Id: Ia3cb02cf0e49ac5596e922c197ff7e010293d033 Signed-off-by: Deepak S --- VNFs/DPPD-PROX/random.h | 58 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 VNFs/DPPD-PROX/random.h (limited to 'VNFs/DPPD-PROX/random.h') diff --git a/VNFs/DPPD-PROX/random.h b/VNFs/DPPD-PROX/random.h new file mode 100644 index 00000000..85508126 --- /dev/null +++ b/VNFs/DPPD-PROX/random.h @@ -0,0 +1,58 @@ +/* +// Copyright (c) 2010-2017 Intel Corporation +// +// Licensed under the Apache License, Version 2.0 (the "License"); +// you may not use this file except in compliance with the License. +// You may obtain a copy of the License at +// +// http://www.apache.org/licenses/LICENSE-2.0 +// +// Unless required by applicable law or agreed to in writing, software +// distributed under the License is distributed on an "AS IS" BASIS, +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +// See the License for the specific language governing permissions and +// limitations under the License. +*/ + +/* + This pseudorandom number generator is based on ref_xorshift128plus, + as implemented by reference_xorshift.h, which has been obtained + from https://sourceforge.net/projects/xorshift-cpp/ + + The licensing terms for reference_xorshift.h are reproduced below. + + // Written in 2014 by Ivo Doko (ivo.doko@gmail.com) + // based on code written by Sebastiano Vigna (vigna@acm.org) + // To the extent possible under law, the author has dedicated + // all copyright and related and neighboring rights to this + // software to the public domain worldwide. This software is + // distributed without any warranty. + // See . +*/ + +#ifndef _RANDOM_H_ +#define _RANDOM_H_ + +#include + +struct random { + uint64_t state[2]; +}; + +static void random_init_seed(struct random *random) +{ + random->state[0] = rte_rdtsc(); + random->state[1] = rte_rdtsc(); +} + +static uint64_t random_next(struct random *random) +{ + const uint64_t s0 = random->state[1]; + const uint64_t s1 = random->state[0] ^ (random->state[0] << 23); + + random->state[0] = random->state[1]; + random->state[1] = (s1 ^ (s1 >> 18) ^ s0 ^ (s0 >> 5)) + s0; + return random->state[1]; +} + +#endif /* _RANDOM_H_ */ -- cgit 1.2.3-korg