Add QEMU tests
Add tests to ensure libgtpnl + kernel driver work as expected. Right now a kernel needs to be built from source, using Pablo's tree: https://git.kernel.org/pub/scm/linux/kernel/git/pablo/gtp.git/ Make sure to enable: CONFIG_GTP=y CONFIG_NET_NS=y CONFIG_VETH=y $ cp bzImage tests/qemu/_linux $ ./configure --enable-qemu-tests $ make $ make check Once patches are upstreamed, it will be possible to use a pre-built kernel from jenkins with: make -C tests qemu-download-kernel Related: OS#1952 Change-Id: Ibf75514b866fffb11e90529e4705f126b23d7415
This commit is contained in:
parent
791a620e4d
commit
72ddb01219
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@ -37,3 +37,5 @@ contrib/libgtpnl.spec
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tools/gtp-link
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tools/gtp-tunnel
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tests/qemu/_*
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@ -4,7 +4,12 @@ include $(top_srcdir)/Make_global.am
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ACLOCAL_AMFLAGS = -I m4
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SUBDIRS = src include tools
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SUBDIRS = \
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include \
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src \
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tests \
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tools \
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$(NULL)
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pkgconfigdir = $(libdir)/pkgconfig
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pkgconfig_DATA = libgtpnl.pc
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14
configure.ac
14
configure.ac
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@ -72,6 +72,19 @@ then
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CPPFLAGS="$CPPFLAGS $WERROR_FLAGS"
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fi
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AC_ARG_ENABLE(qemu_tests,
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[AS_HELP_STRING(
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[--enable-qemu-tests],
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[Run automated tests in QEMU]
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)],
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[qemu_tests=$enableval], [qemu_tests="no"])
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AC_MSG_CHECKING([whether to enable QEMU tests])
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AC_MSG_RESULT([$qemu_tests])
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AM_CONDITIONAL(ENABLE_QEMU_TESTS, test x"$qemu_tests" = x"yes")
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if test x"$qemu_tests" = x"yes" && ! $srcdir/tests/qemu/check-depends.sh; then
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AC_MSG_ERROR([missing programs for --enable-qemu-tests])
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fi
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AC_SUBST([CPPFLAGS])
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AC_SUBST([CFLAGS])
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AC_CONFIG_FILES([
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@ -82,6 +95,7 @@ AC_CONFIG_FILES([
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include/linux/Makefile
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libgtpnl.pc
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src/Makefile
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tests/Makefile
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tools/Makefile
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])
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AC_OUTPUT()
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@ -0,0 +1,15 @@
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check-local:
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$(MAKE) qemu-tests
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if ENABLE_QEMU_TESTS
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qemu-download-kernel:
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rm -f qemu/_linux
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wget -O qemu/_linux \
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https://jenkins.osmocom.org/jenkins/job/ttcn3-ggsn-test-kernel-latest-net-next/ws/_cache/kernel-test/linux
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qemu-tests:
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qemu/initrd-build.sh
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qemu/run-qemu.sh
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else
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qemu-tests:
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@echo "Not running QEMU tests (determined at configure-time)"
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endif
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@ -0,0 +1,75 @@
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#!/bin/sh -ex
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# Use ip from iproute2 instead of busybox ip, because iproute2's version has
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# "ip netns" implemented. Calling /bin/ip explicitly is needed here, otherwise
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# busybox sh will use busybox ip, regardless of PATH.
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alias ip="/bin/ip"
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alias ggsn_side="ip netns exec ggsn_side"
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# MS - SGSN -gtp- GGSN - WEBSERVER
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tunnel_start() {
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test -n "$MS"
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test -n "$MS_PREFLEN"
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test -n "$SGSN_GGSN_PROTO"
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test -n "$SGSN"
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test -n "$SGSN_PREFLEN"
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test -n "$GGSN"
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test -n "$WEBSERVER"
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ip netns add ggsn_side
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# SGSN side: prepare veth_sgsn (SGSN), lo (MS)
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ip link add veth_sgsn type veth peer name veth_ggsn
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ip addr add "$SGSN"/"$SGSN_PREFLEN" dev veth_sgsn
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ip link set veth_sgsn up
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ip addr add "$MS"/"$MS_PREFLEN" dev lo
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ip link set lo up
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# SGSN side: prepare gtp-tunnel
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gtp-link add gtp_sgsn "$SGSN_GGSN_PROTO" --sgsn &
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sleep 1
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gtp-tunnel add gtp_sgsn v1 200 100 "$MS" "$GGSN"
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ip route add "$WEBSERVER"/"$MS_PREFLEN" dev gtp_sgsn
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# GGSN side: prepare veth_ggsn (GGSN), lo (WEBSERVER)
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ip link set veth_ggsn netns ggsn_side
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ggsn_side ip addr add "$GGSN"/"$SGSN_PREFLEN" dev veth_ggsn
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ggsn_side ip link set veth_ggsn up
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ggsn_side ip addr add "$WEBSERVER"/"$MS_PREFLEN" dev lo
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ggsn_side ip link set lo up
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# GGSN side: prepare gtp-tunnel
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ggsn_side gtp-link add gtp_ggsn "$SGSN_GGSN_PROTO" &
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sleep 1
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ggsn_side gtp-tunnel add gtp_ggsn v1 100 200 "$MS" "$SGSN"
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ggsn_side ip route add "$MS"/"$MS_PREFLEN" dev gtp_ggsn
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# List tunnel from both sides
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gtp-tunnel list
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ggsn_side gtp-tunnel list
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}
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tunnel_ping() {
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ip addr show
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ping -c 1 "$WEBSERVER"
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ggsn_side ping -c 1 "$MS"
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}
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tunnel_stop() {
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killall gtp-link
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ip addr del "$MS"/"$MS_PREFLEN" dev lo
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ip link set veth_sgsn down
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if [ "$SGSN_GGSN_PROTO" == "ip" ]; then # FIXME: doesn't work with ip6
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ip addr del "$SGSN"/"$SGSN_PREFLEN" dev veth_sgsn
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fi
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ip link del veth_sgsn
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ip route del "$WEBSERVER"/"$MS_PREFLEN" dev gtp_sgsn
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gtp-tunnel delete gtp_sgsn v1 200 "$SGSN_GGSN_PROTO"
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gtp-link del gtp_sgsn
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ggsn_side gtp-tunnel delete gtp_ggsn v1 100 "$SGSN_GGSN_PROTO"
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ggsn_side gtp-link del gtp_ggsn
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ip netns del ggsn_side
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}
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@ -0,0 +1,14 @@
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#!/bin/sh -ex
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. /tests/00_test_functions.sh
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MS="172.99.0.1"
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MS_PREFLEN="32"
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SGSN_GGSN_PROTO="ip"
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SGSN="172.0.0.1"
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SGSN_PREFLEN="24"
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GGSN="172.0.0.2"
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WEBSERVER="172.99.0.2"
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tunnel_start
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tunnel_ping
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tunnel_stop
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@ -0,0 +1,14 @@
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#!/bin/sh -ex
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. /tests/00_test_functions.sh
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MS="172.99.0.1"
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MS_PREFLEN="32"
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SGSN_GGSN_PROTO="ip6"
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SGSN="fd00::1"
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SGSN_PREFLEN="7"
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GGSN="fd00::2"
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WEBSERVER="172.99.0.2"
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tunnel_start
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tunnel_ping
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tunnel_stop
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@ -0,0 +1,14 @@
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#!/bin/sh -ex
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. /tests/00_test_functions.sh
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MS="fd00::"
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MS_PREFLEN="64"
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SGSN_GGSN_PROTO="ip"
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SGSN="172.0.0.1"
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SGSN_PREFLEN="24"
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GGSN="172.0.0.2"
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WEBSERVER="fe00::2"
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tunnel_start
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tunnel_ping
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tunnel_stop
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@ -0,0 +1,14 @@
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#!/bin/sh -ex
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. /tests/00_test_functions.sh
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MS="fc00::"
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MS_PREFLEN="64"
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SGSN_GGSN_PROTO="ip6"
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SGSN="fd00::1"
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SGSN_PREFLEN="7"
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GGSN="fd00::2"
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WEBSERVER="fe00::2"
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tunnel_start
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tunnel_ping
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tunnel_stop
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@ -0,0 +1,36 @@
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# QEMU tests for libgtpnl
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The tests simulate how a GGSN would use libgtpnl, to set up a GTP tunnel
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between SGSN and GGSN, so a MS on the SGSN side can talk to a webserver on the
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GGSN side.
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## Running the tests
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```
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$ autoreconf -fi
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$ ./configure --enable-qemu-tests
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$ make
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$ make -C tests qemu-download-kernel # or build your own, see below
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$ make check
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```
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## Building your own kernel
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Clone a kernel tree, then:
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```
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$ make defconfig
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$ make menuconfig
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```
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Set the following options:
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```
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CONFIG_GTP=y
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CONFIG_NET_NS=y
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CONFIG_VETH=y
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```
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Build the kernel and copy it to the tests dir:
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```
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$ make -j$(nproc)
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$ cp arch/x86/boot/bzImage /path/to/libgtpnl/tests/qemu/_linux
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```
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@ -0,0 +1,19 @@
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#!/bin/sh
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RET=0
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require_program() {
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if [ -z "$(command -v "$1")" ]; then
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RET=1
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echo "ERROR: missing program: $1"
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fi
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}
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require_program busybox
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require_program cpio
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require_program find
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require_program gzip
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require_program ip
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require_program lddtree
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require_program qemu-system-x86_64
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exit "$RET"
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@ -0,0 +1,110 @@
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#!/bin/sh -e
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DIR="$(cd "$(dirname "$0")" && pwd)"
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DIR_INITRD="$DIR/_initrd"
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SRC_LIBS="$(realpath "$DIR/../../src/.libs/")"
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TOOLS_LIBS="$(realpath "$DIR/../../tools/.libs/")"
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# Add one or more files to the initramfs, with parent directories.
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# usr-merge: resolve symlinks for /lib -> /usr/lib etc. so "cp --parents" does
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# not fail with "cp: cannot make directory '/tmp/initrd/lib': File exists"
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# $@: path to files
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initrd_add_file() {
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local i
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for i in "$@"; do
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case "$i" in
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/bin/*|/sbin/*|/lib/*|/lib64/*)
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cp -a --parents "$i" "$DIR_INITRD"/usr
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;;
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*)
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cp -a --parents "$i" "$DIR_INITRD"
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;;
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esac
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done
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}
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# Add binaries with depending libraries
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# $@: paths to binaries
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initrd_add_bin() {
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local bin
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local bin_path
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local file
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for bin in "$@"; do
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local bin_path="$(which "$bin")"
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if [ -z "$bin_path" ]; then
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echo "ERROR: file not found: $bin"
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exit 1
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fi
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lddtree_out="$(lddtree -l "$bin_path")"
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if [ -z "$lddtree_out" ]; then
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echo "ERROR: lddtree failed on '$bin_path'"
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exit 1
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fi
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for file in $lddtree_out; do
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initrd_add_file "$file"
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# Copy resolved symlink
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if [ -L "$file" ]; then
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initrd_add_file "$(realpath "$file")"
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fi
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done
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done
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}
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# Add command to run inside the initramfs
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# $@: commands
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initrd_add_cmd() {
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local i
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if ! [ -e "$DIR_INITRD"/cmd.sh ]; then
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echo "#!/bin/sh -ex" > "$DIR_INITRD"/cmd.sh
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chmod +x "$DIR_INITRD"/cmd.sh
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fi
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for i in "$@"; do
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echo "$i" >> "$DIR_INITRD"/cmd.sh
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done
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}
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rm -rf "$DIR_INITRD"
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mkdir -p "$DIR_INITRD"
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cd "$DIR_INITRD"
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for dir in bin sbin lib lib64; do
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ln -s usr/"$dir" "$dir"
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done
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mkdir -p \
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dev/net \
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proc \
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run \
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sys \
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tmp \
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usr/bin \
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usr/sbin
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initrd_add_bin \
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busybox \
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ip
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initrd_add_cmd \
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"export LD_LIBRARY_PATH=$SRC_LIBS:$LD_LIBRARY_PATH"
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export LD_LIBRARY_PATH="$SRC_LIBS:$LD_LIBRARY_PATH"
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for i in gtp-link gtp-tunnel; do
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initrd_add_bin "$TOOLS_LIBS"/"$i"
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ln -s "$TOOLS_LIBS"/"$i" usr/bin/"$i"
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done
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mkdir tests
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cp "$DIR"/*.sh tests
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cp "$DIR"/initrd-init.sh init
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find . -print0 \
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| cpio --quiet -o -0 -H newc \
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| gzip -1 > "$DIR"/_initrd.gz
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@ -0,0 +1,35 @@
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#!/bin/busybox sh
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echo "Running initrd-init.sh"
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set -x
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run_test() {
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echo
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echo "QEMU test: $1"
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echo
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if ! sh -ex "/tests/$1"; then
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poweroff -f
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fi
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}
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export HOME=/root
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export LD_LIBRARY_PATH=/usr/local/lib
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export PATH=/usr/local/bin:/usr/bin:/bin:/sbin:/usr/local/sbin:/usr/sbin
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export TERM=screen
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/bin/busybox --install -s
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hostname qemu
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mount -t proc proc /proc
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mount -t sysfs sys /sys
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mknod /dev/null c 1 3
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. /cmd.sh
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set +x
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# Run all tests
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run_test 01_ms_ip4_sgsn_ip4.sh
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run_test 02_ms_ip4_sgsn_ip6.sh
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run_test 03_ms_ip6_sgsn_ip4.sh
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run_test 04_ms_ip6_sgsn_ip6.sh
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# Success (run-qemu.sh checks for this line)
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echo "QEMU_TEST_SUCCESSFUL"
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poweroff -f
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@ -0,0 +1,51 @@
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#!/bin/sh -e
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DIR="$(cd "$(dirname "$0")" && pwd)"
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if [ -e /dev/kvm ]; then
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MACHINE_ARG="-machine pc,accel=kvm"
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else
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echo "WARNING: /dev/kvm not found, emulation will be slower"
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MACHINE_ARG="-machine pc"
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fi
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if ! [ -e "$DIR"/_linux ]; then
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echo "ERROR: linux kernel not found: $DIR/_linux"
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echo "Put a kernel there, either download it from the Osmocom jenkins:"
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echo "$ make -C tests qemu-download-kernel"
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echo
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echo "Or build your own kernel. Make sure to set:"
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echo " CONFIG_GTP=y"
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echo " CONFIG_NET_NS=y"
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echo " CONFIG_VETH=y"
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exit 1
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fi
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KERNEL_CMDLINE="root=/dev/ram0 console=ttyS0 panic=-1 init=/init"
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set -x
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qemu-system-x86_64 \
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$MACHINE_ARG \
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-smp 1 \
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-m 512M \
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-no-user-config -nodefaults -display none \
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-gdb unix:"$DIR"/_gdb.pipe,server=on,wait=off \
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-no-reboot \
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-kernel "$DIR"/_linux \
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-initrd "$DIR"/_initrd.gz \
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-append "${KERNEL_CMDLINE}" \
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-serial stdio \
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-chardev socket,id=charserial1,path="$DIR"/_gdb-serial.pipe,server=on,wait=off \
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-device isa-serial,chardev=charserial1,id=serial1 \
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2>&1 | tee "$DIR/_output"
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set +x
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if grep -q "QEMU_TEST_SUCCESSFUL" "$DIR/_output"; then
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echo
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echo "QEMU tests: successful"
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echo
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else
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echo
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echo "QEMU tests: failed"
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echo
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exit 1
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||||
fi
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||||
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