VNET (VPP Network Stack)
========================
The files associated with the VPP network stack layer are located in the
./src/vnet folder. The Network Stack Layer is basically an
instantiation of the code in the other layers. This layer has a vnet
library that provides vectorized layer-2 and 3 networking graph nodes, a
packet generator, and a packet tracer.
In terms of building a packet processing application, vnet provides a
platform-independent subgraph to which one connects a couple of
device-driver nodes.
Typical RX connections include "ethernet-input" \[full software
classification, feeds ipv4-input, ipv6-input, arp-input etc.\] and
"ipv4-input-no-checksum" \[if hardware can classify, perform ipv4 header
checksum\].
List of features and layer areas that VNET works with:
Effective graph dispatch function coding
----------------------------------------
Over the 15 years, multiple coding styles have emerged: a
single/dual/quad loop coding model (with variations) and a
fully-pipelined coding model.
Single/dual loops
-----------------
The single/dual/quad loop model variations conveniently solve problems
where the number of items to process is not known in advance: typical
hardware RX-ring processing. This coding style is also very effective
when a given node will not need to cover a complex set of dependent
reads.
Here is an quad/single loop which can leverage up-to-avx512 SIMD vector
units to convert buffer indices to buffer pointers:
```c
static uword
simulated_ethernet_interface_tx (vlib_main_t * vm,
vlib_node_runtime_t *
node, vlib_frame_t * frame)
{
u32 n_left_from, *from;
u32 next_index = 0;
u32 n_bytes;
u32 thread_index = vm->thread_index;
vnet_main_t *vnm
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# Copyright (c) 2016 Cisco and/or its affiliates.
# 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.
export WS_ROOT=$(CURDIR)
export BR=$(WS_ROOT)/build-root
CCACHE_DIR?=$(BR)/.ccache
GDB?=gdb
PLATFORM?=vpp
SAMPLE_PLUGIN?=no
MACHINE=$(shell uname -m)
SUDO?=sudo
,:=,
define disable_plugins
$(if $(1), \
"plugins {" \
$(patsubst %,"plugin %_plugin.so { disable }",$(subst $(,), ,$(1))) \
" }" \
,)
endef
MINIMAL_STARTUP_CONF=" \
unix { \
interactive \
cli-listen /run/vpp/cli.sock \
gid $(shell id -g) \
$(if $(wildcard startup.vpp),"exec startup.vpp",) \
} \
$(if $(DPDK_CONFIG), "dpdk { $(DPDK_CONFIG) }",) \
$(call disable_plugins,$(DISABLED_PLUGINS)) \
"
GDB_ARGS= -ex "handle SIGUSR1 noprint nostop"
#
# OS Detection
#
# We allow Darwin (MacOS) for docs generation; VPP build will still fail.
ifneq ($(shell uname),Darwin)
OS_ID = $(shell grep '^ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g')
OS_VERSION_ID= $(shell grep '^VERSION_ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g')
endif
ifeq ($(filter ubuntu debian,$(OS_ID)),$(OS_ID))
PKG=deb
else ifeq ($(filter rhel centos fedora opensuse opensuse-leap opensuse-tumbleweed,$(OS_ID)),$(OS_ID))
PKG=rpm
endif
# +libganglia1-dev if building the gmond plugin
DEB_DEPENDS = curl build-essential autoconf automake ccache
DEB_DEPENDS += debhelper dkms git libtool libapr1-dev dh-systemd
DEB_DEPENDS += libconfuse-dev git-review exuberant-ctags cscope pkg-config
DEB_DEPENDS += lcov chrpath autoconf indent clang-format libnuma-dev
DEB_DEPENDS += python-all python-dev python-virtualenv python-pip libffi6 check
DEB_DEPENDS += libboost-all-dev libffi-dev python-ply libmbedtls-dev
ifeq ($(OS_VERSION_ID),14.04)
DEB_DEPENDS += openjdk-8-jdk-headless
DEB_DEPENDS += libssl-dev
else ifeq ($(OS_ID)-$(OS_VERSION_ID),debian-8)
DEB_DEPENDS += openjdk-8-jdk-headless
DEB_DEPENDS += libssl-dev
APT_ARGS = -t jessie-backports
else ifeq ($(OS_ID)-$(OS_VERSION_ID),debian-9)
DEB_DEPENDS += default-jdk-headless
DEB_DEPENDS += libssl1.0-dev
else
DEB_DEPENDS += default-jdk-headless
DEB_DEPENDS += libssl-dev
endif
RPM_DEPENDS = redhat-lsb glibc-static java-1.8.0-openjdk-devel yum-utils
RPM_DEPENDS += apr-devel
RPM_DEPENDS += numactl-devel
RPM_DEPENDS += check check-devel
RPM_DEPENDS += boost boost-devel
RPM_DEPENDS += selinux-policy selinux-policy-devel
ifeq ($(OS_ID)-$(OS_VERSION_ID),fedora-25)
RPM_DEPENDS += subunit subunit-devel
RPM_DEPENDS += openssl-devel
RPM_DEPENDS += python-devel python2-ply
RPM_DEPENDS += python2-virtualenv
RPM_DEPENDS += mbedtls-devel
RPM_DEPENDS_GROUPS = 'C Development Tools and Libraries'
else ifeq ($(shell if [ "$(OS_ID)" = "fedora" ]; then test $(OS_VERSION_ID) -gt 25; echo $$?; fi),0)
RPM_DEPENDS += subunit subunit-devel
RPM_DEPENDS += compat-openssl10-devel
RPM_DEPENDS += python2-devel python2-ply
RPM_DEPENDS += python2-virtualenv
RPM_DEPENDS += mbedtls-devel
RPM_DEPENDS_GROUPS = 'C Development Tools and Libraries'
else
RPM_DEPENDS += openssl-devel
RPM_DEPENDS += python-devel python-ply
RPM_DEPENDS += python-virtualenv
RPM_DEPENDS_GROUPS = 'Development Tools'
endif
# +ganglia-devel if building the ganglia plugin
RPM_DEPENDS += chrpath libffi-devel rpm-build
SUSE_NAME= $(shell grep '^NAME=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g' | cut -d' ' -f2)
SUSE_ID= $(shell grep '^VERSION_ID=' /etc/os-release | cut -f2- -d= | sed -e 's/\"//g' | cut -d' ' -f2)
RPM_SUSE_BUILDTOOLS_DEPS = autoconf automake ccache check-devel chrpath
RPM_SUSE_BUILDTOOLS_DEPS += clang indent libtool make python-ply
RPM_SUSE_DEVEL_DEPS = glibc-devel-static java-1_8_0-openjdk-devel libnuma-devel
RPM_SUSE_DEVEL_DEPS += libopenssl-devel openssl-devel mbedtls-devel
RPM_SUSE_PYTHON_DEPS = python-devel python3-devel python-pip python3-pip
RPM_SUSE_PYTHON_DEPS += python-rpm-macros python3-rpm-macros
RPM_SUSE_PLATFORM_DEPS = distribution-release shadow rpm-build
ifeq ($(OS_ID),opensuse)
ifeq ($(SUSE_NAME),Tumbleweed)
RPM_SUSE_DEVEL_DEPS = libboost_headers-devel libboost_thread-devel gcc
RPM_SUSE_PYTHON_DEPS += python2-ply python2-virtualenv
endif
ifeq ($(SUSE_ID),15.0)
RPM_SUSE_DEVEL_DEPS = libboost_headers-devel libboost_thread-devel gcc6
RPM_SUSE_PYTHON_DEPS += python2-ply python2-virtualenv
else
RPM_SUSE_DEVEL_DEPS += boost_1_61-devel gcc6
RPM_SUSE_PYTHON_DEPS += python-virtualenv
endif
endif
ifeq ($(OS_ID),opensuse-leap)
ifeq ($(SUSE_ID),15.0)
RPM_SUSE_DEVEL_DEPS = libboost_headers-devel libboost_thread-devel gcc6
RPM_SUSE_PYTHON_DEPS += python2-ply python2-virtualenv
endif
endif
RPM_SUSE_DEPENDS += $(RPM_SUSE_BUILDTOOLS_DEPS) $(RPM_SUSE_DEVEL_DEPS) $(RPM_SUSE_PYTHON_DEPS) $(RPM_SUSE_PLATFORM_DEPS)
ifneq ($(wildcard $(STARTUP_DIR)/startup.conf),)
STARTUP_CONF ?= $(STARTUP_DIR)/startup.conf
endif
ifeq ($(findstring y,$(UNATTENDED)),y)
CONFIRM=-y
FORCE=--force-yes
endif
TARGETS = vpp
ifneq ($(SAMPLE_PLUGIN),no)
TARGETS += sample-plugin
endif
.PHONY: help wipe wipe-release build build-release rebuild rebuild-release
.PHONY: run run-release debug debug-release build-vat run-vat pkg-deb pkg-rpm
.PHONY: ctags cscope
.PHONY: test test-debug retest retest-debug test-doc test-wipe-doc test-help test-wipe
.PHONY: test-cov test-wipe-cov
help:
@echo "Make Targets:"
@echo " install-dep - install software dependencies"
@echo " wipe - wipe all products of debug build "
@echo " wipe-release - wipe all products of release build "
@echo " build - build debug binaries"
@echo " build-release - build release binaries"
@echo " build-coverity - build coverity artifacts"
@echo " rebuild - wipe and build debug binares"
@echo " rebuild-release - wipe and build release binares"
@echo " run - run debug binary"
@echo " run-release - run release binary"
@echo " debug - run debug binary with debugger"
@echo " debug-release - run release binary with debugger"
@echo " test - build and run (basic) functional tests"
@echo " test-debug - build and run (basic) functional tests (debug build)"
@echo " test-all - build and run (all) functional tests"
@echo " test-all-debug - build and run (all) functional tests (debug build)"
@echo " test-shell - enter shell with test environment"
@echo " test-shell-debug - enter shell with test environment (debug build)"
@echo " test-wipe - wipe files generated by unit tests"
@echo " retest - run functional tests"
@echo " retest-debug - run functional tests (debug build)"
@echo " test-help - show help on test framework"
@echo " run-vat - run vpp-api-test tool"
@echo " pkg-deb - build DEB packages"
@echo " pkg-rpm - build RPM packages"
@echo " dpdk-install-dev - install DPDK development packages"
@echo " ctags - (re)generate ctags database"
@echo " gtags - (re)generate gtags database"
@echo " cscope - (re)generate cscope database"
@echo " checkstyle - check coding style"
@echo " fixstyle - fix coding style"
@echo " doxygen - (re)generate documentation"
@echo " bootstrap-doxygen - setup Doxygen dependencies"
@echo " wipe-doxygen - wipe all generated documentation"
@echo " test-doc - generate documentation for test framework"
@echo " test-wipe-doc - wipe documentation for test framework"
@echo " test-cov - generate code coverage report for test framework"
@echo " test-wipe-cov - wipe code coverage report for test framework"
@echo " test-checkstyle - check PEP8 compliance for test framework"
@echo ""
@echo "Make Arguments:"
@echo " V=[0|1] - set build verbosity level"
@echo " STARTUP_CONF=<path> - startup configuration file"
@echo " (e.g. /etc/vpp/startup.conf)"
@echo " STARTUP_DIR=<path> - startup drectory (e.g. /etc/vpp)"
@echo " It also sets STARTUP_CONF if"
@echo " startup.conf file is present"
@echo " GDB=<path> - gdb binary to use for debugging"
@echo " PLATFORM=<name> - target platform. default is vpp"
@echo " TEST=<filter> - apply filter to test set, see test-help"
@echo " DPDK_CONFIG=<conf> - add specified dpdk config commands to"
@echo " autogenerated startup.conf"
@echo " (e.g. \"no-pci\" )"
@echo " SAMPLE_PLUGIN=yes - in addition build/run/debug sample plugin"
@echo " DISABLED_PLUGINS=<list> - comma separated list of plugins which"
@echo " should not be loaded"
@echo ""
@echo "Current Argument Values:"
@echo " V = $(V)"
@echo " STARTUP_CONF = $(STARTUP_CONF)"
@echo " STARTUP_DIR = $(STARTUP_DIR)"
@echo " GDB = $(GDB)"
@echo " PLATFORM = $(PLATFORM)"
@echo " DPDK_VERSION = $(DPDK_VERSION)"
@echo " DPDK_CONFIG = $(DPDK_CONFIG)"
@echo " SAMPLE_PLUGIN = $(SAMPLE_PLUGIN)"
@echo " DISABLED_PLUGINS = $(DISABLED_PLUGINS)"
$(BR)/.deps.ok:
ifeq ($(findstring y,$(UNATTENDED)),y)
make install-dep
endif
ifeq ($(filter ubuntu debian,$(OS_ID)),$(OS_ID))
@MISSING=$$(apt-get install -y -qq -s $(DEB_DEPENDS) | grep "^Inst ") ; \
if [ -n "$$MISSING" ] ; then \
echo "\nPlease install missing packages: \n$$MISSING\n" ; \
echo "by executing \"make install-dep\"\n" ; \
exit 1 ; \
fi ; \
exit 0
else ifneq ("$(wildcard /etc/redhat-release)","")
@for i in $(RPM_DEPENDS) ; do \
RPM=$$(basename -s .rpm "$${i##*/}" | cut -d- -f1,2,3) ; \
MISSING+=$$(rpm -q $$RPM | grep "^package") ; \
done ; \
if [ -n "$$MISSING" ] ; then \
echo "Please install missing RPMs: \n$$MISSING\n" ; \
echo "by executing \"make install-dep\"\n" ; \
exit 1 ; \
fi ; \
exit 0
endif
@touch $@
bootstrap:
@echo "'make bootstrap' is not needed anymore"
install-dep:
ifeq ($(filter ubuntu debian,$(OS_ID)),$(OS_ID))
ifeq ($(OS_VERSION_ID),14.04)
@sudo -E apt-get $(CONFIRM) $(FORCE) install software-properties-common
@sudo -E add-apt-repository ppa:openjdk-r/ppa $(CONFIRM)
endif
ifeq ($(OS_ID)-$(OS_VERSION_ID),debian-8)
@grep -q jessie-backports /etc/apt/sources.list /etc/apt/sources.list.d/* 2> /dev/null \
|| ( echo "Please install jessie-backports" ; exit 1 )
endif
@sudo -E apt-get update
@sudo -E apt-get $(APT_ARGS) $(CONFIRM) $(FORCE) install $(DEB_DEPENDS)
else ifneq ("$(wildcard /etc/redhat-release)","")
@sudo -E yum groupinstall $(CONFIRM) $(RPM_DEPENDS_GROUPS)
@sudo -E yum install $(CONFIRM) $(RPM_DEPENDS)
@sudo -E debuginfo-install $(CONFIRM) glibc openssl-libs mbedtls-devel zlib
else ifeq ($(filter opensuse,$(OS_ID)),$(OS_ID))
@sudo -E zypper refresh
@sudo -E zypper install -y $(RPM_SUSE_DEPENDS)
else ifeq ($(filter opensuse-leap,$(OS_ID)),$(OS_ID))
@sudo -E zypper refresh
@sudo -E zypper install -y $(RPM_SUSE_DEPENDS)
else
$(error "This option currently works only on Ubuntu, Debian, Centos or openSUSE systems")
endif
define make
@make -C $(BR) PLATFORM=$(PLATFORM) TAG=$(1) $(2)
endef
$(BR)/scripts/.version:
ifneq ("$(wildcard /etc/redhat-release)","")
$(shell $(BR)/scripts/version rpm-string > $(BR)/scripts/.version)
else
$(shell $(BR)/scripts/version > $(BR)/scripts/.version)
endif
DIST_FILE = $(BR)/vpp-$(shell src/scripts/version).tar
DIST_SUBDIR = vpp-$(shell src/scripts/version|cut -f1 -d-)
dist:
@if git rev-parse 2> /dev/null ; then \
git archive \
--prefix=$(DIST_SUBDIR)/ \
--format=tar \
-o $(DIST_FILE) \
HEAD ; \
git describe > $(BR)/.version ; \
else \
(cd .. ; tar -cf $(DIST_FILE) $(DIST_SUBDIR) --exclude=*.tar) ; \
src/scripts/version > $(BR)/.version ; \
fi
@tar --append \
--file $(DIST_FILE) \
--transform='s,.*/.version,$(DIST_SUBDIR)/src/scripts/.version,' \
$(BR)/.version
@$(RM) $(BR)/.version $(DIST_FILE).xz
@xz -v --threads=0 $(DIST_FILE)
@$(RM) $(BR)/vpp-latest.tar.xz
@ln -rs $(DIST_FILE).xz $(BR)/vpp-latest.tar.xz
build: $(BR)/.deps.ok
$(call make,$(PLATFORM)_debug,$(addsuffix -install,$(TARGETS)))
wipedist:
@$(RM) $(BR)/*.tar.xz
wipe: wipedist test-wipe $(BR)/.deps.ok
$(call make,$(PLATFORM)_debug,$(addsuffix -wipe,$(TARGETS)))
rebuild: wipe build
build-release: $(BR)/.deps.ok
$(call make,$(PLATFORM),$(addsuffix -install,$(TARGETS)))
wipe-release: test-wipe $(BR)/.deps.ok
$(call make,$(PLATFORM),$(addsuffix -wipe,$(TARGETS)))
rebuild-release: wipe-release build-release
export VPP_PYTHON_PREFIX ?= $(BR)/python
libexpand = $(subst $(subst ,, ),:,$(foreach lib,$(1),$(BR)/install-$(2)-native/vpp/$(lib)/$(3)))
define test
$(if $(filter-out $(3),retest),make -C $(BR) PLATFORM=$(1) TAG=$(2) vpp-install vom-install,)
$(eval libs:=lib lib64)
make -C test \
TEST_DIR=$(WS_ROOT)/test \
VPP_TEST_BUILD_DIR=$(BR)/build-$(2)-native \
VPP_TEST_BIN=$(BR)/install-$(2)-native/vpp/bin/vpp \
VPP_TEST_PLUGIN_PATH=$(call libexpand,$(libs),$(2),vpp_plugins) \
VPP_TEST_INSTALL_PATH=$(BR)/install-$(2)-native/ \
LD_LIBRARY_PATH=$(call libexpand,$(libs),$(2),) \
EXTENDED_TESTS=$(EXTENDED_TESTS) \
PYTHON=$(PYTHON) \
OS_ID=$(OS_ID) \
CACHE_OUTPUT=$(CACHE_OUTPUT) \
$(3)
endef
test:
$(call test,vpp,vpp,test)
test-debug:
$(call test,vpp,vpp_debug,test)
test-all:
$(eval EXTENDED_TESTS=yes)
$(call test,vpp,vpp,test)
test-all-debug:
$(eval EXTENDED_TESTS=yes)
$(call test,vpp,vpp_debug,test)
test-help:
@make -C test help
test-wipe:
@make -C test wipe
test-shell:
$(call test,vpp,vpp,shell)
test-shell-debug:
$(call test,vpp,vpp_debug,shell)
test-dep:
@make -C test test-dep
test-doc:
@make -C test doc
test-wipe-doc:
@make -C test wipe-doc
test-cov:
$(eval EXTENDED_TESTS=yes)
$(call test,vpp,vpp_gcov,cov)
test-wipe-cov:
@make -C test wipe-cov
test-checkstyle:
@make -C test checkstyle
retest:
$(call test,vpp,vpp,retest)
retest-debug:
$(call test,vpp,vpp_debug,retest)
STARTUP_DIR ?= $(PWD)
ifeq ("$(wildcard $(STARTUP_CONF))","")
define run
@echo "WARNING: STARTUP_CONF not defined or file doesn't exist."
@echo " Running with minimal startup config: $(MINIMAL_STARTUP_CONF)\n"
@cd $(STARTUP_DIR) && \
$(SUDO) $(2) $(1)/vpp/bin/vpp $(MINIMAL_STARTUP_CONF)
endef
else
define run
@cd $(STARTUP_DIR) && \
$(SUDO) $(2) $(1)/vpp/bin/vpp $(shell cat $(STARTUP_CONF) | sed -e 's/#.*//')
endef
endif
%.files: .FORCE
@find . \( -name '*\.[chyS]' -o -name '*\.java' -o -name '*\.lex' \) -and \
\( -not -path './build-root*' -o -path \
'./build-root/build-vpp_debug-native/dpdk*' \) > $@
.FORCE:
run:
$(call run, $(BR)/install-$(PLATFORM)_debug-native)
run-release:
$(call run, $(BR)/install-$(PLATFORM)-native)
debug:
$(call run, $(BR)/install-$(PLATFORM)_debug-native,$(GDB) $(GDB_ARGS) --args)
build-coverity:
$(call make,$(PLATFORM)_coverity,install-packages)
debug-release:
$(call run, $(BR)/install-$(PLATFORM)-native,$(GDB) $(GDB_ARGS) --args)
build-vat:
$(call make,$(PLATFORM)_debug,vpp-api-test-install)
run-vat:
@$(SUDO) $(BR)/install-$(PLATFORM)_debug-native/vpp/bin/vpp_api_test
pkg-deb:
$(call make,$(PLATFORM),install-deb)
pkg-rpm: dist
make -C extras/rpm
pkg-srpm: dist
make -C extras/rpm srpm
dpdk-install-dev:
make -C dpdk install-$(PKG)
ctags: ctags.files
@ctags --totals --tag-relative -L $<
@rm $<
gtags: ctags
@gtags --gtagslabel=ctags
cscope: cscope.files
@cscope -b -q -v
checkstyle:
@build-root/scripts/checkstyle.sh
fixstyle:
@build-root/scripts/checkstyle.sh --fix
#
# Build the documentation
#
# Doxygen configuration and our utility scripts
export DOXY_DIR ?= $(WS_ROOT)/doxygen
define make-doxy
@OS_ID="$(OS_ID)" make -C $(DOXY_DIR) $@
endef
.PHONY: bootstrap-doxygen doxygen wipe-doxygen
bootstrap-doxygen:
$(call make-doxy)
doxygen:
$(call make-doxy)
wipe-doxygen:
$(call make-doxy)
define banner
@echo "========================================================================"
@echo " $(1)"
@echo "========================================================================"
@echo " "
endef
verify: install-dep $(BR)/.deps.ok dpdk-install-dev
$(call banner,"Building for PLATFORM=vpp using gcc")
@make -C build-root PLATFORM=vpp TAG=vpp wipe-all install-packages
$(call banner,"Building sample-plugin")
@make -C build-root PLATFORM=vpp TAG=vpp sample-plugin-install
$(call banner,"Building libmemif")
@make -C build-root PLATFORM=vpp TAG=vpp libmemif-install
$(call banner,"Building VOM")
@make -C build-root PLATFORM=vpp TAG=vpp vom-install
$(call banner,"Building $(PKG) packages")
@make pkg-$(PKG)
ifeq ($(OS_ID)-$(OS_VERSION_ID),ubuntu-16.04)
@make COMPRESS_FAILED_TEST_LOGS=yes RETRIES=3 test
endif
