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/input.c | 105 +++++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 105 insertions(+) create mode 100644 VNFs/DPPD-PROX/input.c (limited to 'VNFs/DPPD-PROX/input.c') diff --git a/VNFs/DPPD-PROX/input.c b/VNFs/DPPD-PROX/input.c new file mode 100644 index 00000000..bb956bcd --- /dev/null +++ b/VNFs/DPPD-PROX/input.c @@ -0,0 +1,105 @@ +/* +// 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 +#include + +#include "clock.h" +#include "input.h" + +static struct input *inputs[32]; +static int n_inputs; +static int max_input_fd; + +int reg_input(struct input *in) +{ + if (n_inputs == sizeof(inputs)/sizeof(inputs[0])) + return -1; + + for (int i = 0; i < n_inputs; ++i) { + if (inputs[i] == in) + return -1; + } + inputs[n_inputs++] = in; + max_input_fd = RTE_MAX(in->fd, max_input_fd); + + return 0; +} + +void unreg_input(struct input *in) +{ + int rm, i; + + for (rm = 0; rm < n_inputs; ++rm) { + if (inputs[rm] == in) { + break; + } + } + + if (rm == n_inputs) + return ; + + for (i = rm + 1; i < n_inputs; ++i) { + inputs[i - 1] = inputs[i]; + } + + n_inputs--; + max_input_fd = 0; + for (i = 0; i < n_inputs; ++i) { + max_input_fd = RTE_MAX(inputs[i]->fd, max_input_fd); + } +} + +static int tsc_diff_to_tv(uint64_t beg, uint64_t end, struct timeval *tv) +{ + if (end < beg) { + return -1; + } + + uint64_t diff = end - beg; + tsc_to_tv(tv, diff); + return 0; +} + +void input_proc_until(uint64_t deadline) +{ + struct timeval tv; + fd_set in_fd; + int ret = 1; + + /* Keep checking for input until select() returned 0 (timeout + occurred before input was read) or current time has passed + the deadline (which occurs when time progresses past the + deadline between return of select() and the next + iteration). */ + while (ret != 0 && tsc_diff_to_tv(rte_rdtsc(), deadline, &tv) == 0) { + FD_ZERO(&in_fd); + + for (int i = 0; i < n_inputs; ++i) { + FD_SET(inputs[i]->fd, &in_fd); + } + + ret = select(max_input_fd + 1, &in_fd, NULL, NULL, &tv); + + if (ret > 0) { + for (int i = 0; i < n_inputs; ++i) { + if (FD_ISSET(inputs[i]->fd, &in_fd)) { + inputs[i]->proc_input(inputs[i]); + } + } + } + } +} -- cgit 1.2.3-korg