ci: add some basic vhost_user+virtio_user test

This script is based on Thomas test-null.sh script.

Quickly check that initialisation (with multiqueue) and basic forwarding
are not broken between two testpmd: one testpmd polling from a vhost-user
client port and the other testpmd polling one virtio_user port.

Signed-off-by: David Marchand <[email protected]>

.ci/linux-build.sh

@@ -136,6 +136,14 @@ if [ -z "$cross_file" ]; then
     [ "$failed" != "true" ]
 fi
 
+if [ -z "$cross_file" ] && [ "$MINI" != "true" ]; then
+    failed=
+    configure_coredump
+    devtools/test-vhost.sh || failed="true"
+    catch_coredump
+    [ "$failed" != "true" ]
+fi
+
 if [ "$ABI_CHECKS" = "true" ]; then
     if [ "$(cat libabigail/VERSION 2>/dev/null)" != "$LIBABIGAIL_VERSION" ]; then
         rm -rf libabigail

MAINTAINERS

@@ -991,6 +991,7 @@ M: Maxime Coquelin <[email protected]>
 M: Chenbo Xia <[email protected]>
 T: git://dpdk.org/next/dpdk-next-virtio
 F: lib/vhost/
+F: devtools/test-vhost.sh
 F: doc/guides/prog_guide/vhost_lib.rst
 F: examples/vhost/
 F: doc/guides/sample_app_ug/vhost.rst

devtools/test-vhost.sh

@@ -0,0 +1,73 @@
+#! /bin/sh -e
+# SPDX-License-Identifier: BSD-3-Clause
+# Copyright 2015 6WIND S.A.
+# Copyright 2019 Mellanox Technologies, Ltd
+# Copyright (c) 2024 Red Hat, Inc.
+
+# Run a quick forwarding test without hugepage, with one testpmd using
+# virtio-user and another using vhost-user.
+
+build=${1:-build} # first argument can be the build directory
+testpmd=$1 # or first argument can be the testpmd path
+corelist_server=${2:-0,1,2} # default using cores 0, 1, 2
+corelist_client=${3:-0,1,3} # default using cores 0, 1, 3
+eal_options=$4
+testpmd_options=$5
+
+sock=$(mktemp -t dpdk.virtio-user.XXXXXX.sock)
+pid_client=
+pid_server=
+cleanup() {
+	rm -f $sock
+	[ "$pid_client $pid_server" != " " ] || return
+	if kill -0 $pid_client $pid_server >/dev/null 2>/dev/null; then
+		sleep 2
+	fi
+	if kill -0 $pid_client >/dev/null 2>/dev/null ; then
+		echo ============================
+		echo Force killing client testpmd
+		kill -9 $pid_client
+	fi
+	if kill -0 $pid_server >/dev/null 2>/dev/null ; then
+		echo ============================
+		echo Force killing server testpmd
+		kill -9 $pid_server
+	fi
+}
+
+trap cleanup EXIT
+
+[ -f "$testpmd" ] && build=$(dirname $(dirname $testpmd))
+[ -f "$testpmd" ] || testpmd=$build/app/dpdk-testpmd
+[ -f "$testpmd" ] || testpmd=$build/app/testpmd
+if [ ! -f "$testpmd" ] ; then
+	echo 'ERROR: testpmd cannot be found' >&2
+	exit 1
+fi
+
+if ldd $testpmd | grep -q librte_ ; then
+	export LD_LIBRARY_PATH=$build/lib:$LD_LIBRARY_PATH
+	libs="-d $build/drivers"
+else
+	libs=
+fi
+
+rm -f $sock
+( $testpmd -l $corelist_server --file-prefix=virtio-user --no-huge -m 1024 \
+	--single-file-segments --no-pci $libs \
+	--vdev net_virtio_user0,path=$sock,queues=2,server=1 $eal_options -- \
+	--no-mlockall --stats-period 1 --rxq 2 --txq 2 --nb-cores=2 --tx-first -a $testpmd_options \
+>/dev/null 2>/dev/null) &
+pid_server=$!
+
+( $testpmd -l $corelist_client --file-prefix=vhost --no-huge -m 1024 \
+	--single-file-segments --no-pci $libs \
+	--vdev net_vhost0,iface=$sock,queues=8,client=1 $eal_options -- \
+	--no-mlockall --stats-period 1 --rxq 8 --txq 8 --nb-cores=2 --tx-first -a $testpmd_options \
+) &
+pid_client=$!
+
+sleep 2
+kill $pid_client
+sleep 1
+kill $pid_server