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/ip_subnet.c | 45 +++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 45 insertions(+) create mode 100644 VNFs/DPPD-PROX/ip_subnet.c (limited to 'VNFs/DPPD-PROX/ip_subnet.c') diff --git a/VNFs/DPPD-PROX/ip_subnet.c b/VNFs/DPPD-PROX/ip_subnet.c new file mode 100644 index 00000000..dc6ab1ac --- /dev/null +++ b/VNFs/DPPD-PROX/ip_subnet.c @@ -0,0 +1,45 @@ +/* +// 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. +*/ + +#include "ip_subnet.h" +#include "prox_assert.h" + +uint32_t ip4_subet_get_n_hosts(const struct ip4_subnet *sn) +{ + PROX_ASSERT(sn->prefix <= 32 && sn->prefix >= 1); + return 1 << (32 - sn->prefix); +} + +int ip4_subnet_to_host(const struct ip4_subnet *sn, uint32_t host_index, uint32_t *ret_ip) +{ + PROX_ASSERT(ip4_subnet_is_valid(sn)); + + if (host_index >= ip4_subet_get_n_hosts(sn)) { + return -1; + } + + *ret_ip = sn->ip + host_index; + return 0; +} + +int ip4_subnet_is_valid(const struct ip4_subnet *sn) +{ + if (sn->prefix == 0) { + return sn->ip == 0; + } + + return (sn->ip & ~(((int)(1 << 31)) >> (sn->prefix - 1))) == 0; +} -- cgit 1.2.3-korg