gre_gso.sh

  1#!/bin/bash
  2# SPDX-License-Identifier: GPL-2.0
  3
  4# This test is for checking GRE GSO.
  5source lib.sh
  6ret=0
  7
  8# all tests in this script. Can be overridden with -t option
  9TESTS="gre_gso"
 10
 11VERBOSE=0
 12PAUSE_ON_FAIL=no
 13PAUSE=no
 14TMPFILE=`mktemp`
 15PID=
 16
 17log_test()
 18{
 19	local rc=$1
 20	local expected=$2
 21	local msg="$3"
 22
 23	if [ ${rc} -eq ${expected} ]; then
 24		printf "    TEST: %-60s  [ OK ]\n" "${msg}"
 25		nsuccess=$((nsuccess+1))
 26	else
 27		ret=1
 28		nfail=$((nfail+1))
 29		printf "    TEST: %-60s  [FAIL]\n" "${msg}"
 30		if [ "${PAUSE_ON_FAIL}" = "yes" ]; then
 31		echo
 32			echo "hit enter to continue, 'q' to quit"
 33			read a
 34			[ "$a" = "q" ] && exit 1
 35		fi
 36	fi
 37
 38	if [ "${PAUSE}" = "yes" ]; then
 39		echo
 40		echo "hit enter to continue, 'q' to quit"
 41		read a
 42		[ "$a" = "q" ] && exit 1
 43	fi
 44}
 45
 46setup()
 47{
 48	set -e
 49	setup_ns ns1
 50	IP="ip -netns $ns1"
 51	NS_EXEC="ip netns exec $ns1"
 52
 53	ip link add veth0 type veth peer name veth1
 54	ip link set veth0 up
 55	ip link set veth1 netns $ns1
 56	$IP link set veth1 name veth0
 57	$IP link set veth0 up
 58
 59	dd if=/dev/urandom of=$TMPFILE bs=1024 count=2048 &>/dev/null
 60	set +e
 61}
 62
 63cleanup()
 64{
 65	rm -rf $TMPFILE
 66	[ -n "$PID" ] && kill $PID
 67	ip link del dev gre1 &> /dev/null
 68	ip link del dev veth0 &> /dev/null
 69	cleanup_ns $ns1
 70}
 71
 72get_linklocal()
 73{
 74	local dev=$1
 75	local ns=$2
 76	local addr
 77
 78	[ -n "$ns" ] && ns="-netns $ns"
 79
 80	addr=$(ip -6 -br $ns addr show dev ${dev} | \
 81	awk '{
 82		for (i = 3; i <= NF; ++i) {
 83			if ($i ~ /^fe80/)
 84				print $i
 85		}
 86	}'
 87	)
 88	addr=${addr/\/*}
 89
 90	[ -z "$addr" ] && return 1
 91
 92	echo $addr
 93
 94	return 0
 95}
 96
 97gre_create_tun()
 98{
 99	local a1=$1
100	local a2=$2
101	local mode
102
103	[[ $a1 =~ ^[0-9.]*$ ]] && mode=gre || mode=ip6gre
104
105	ip tunnel add gre1 mode $mode local $a1 remote $a2 dev veth0
106	ip link set gre1 up
107	$IP tunnel add gre1 mode $mode local $a2 remote $a1 dev veth0
108	$IP link set gre1 up
109}
110
111gre_gst_test_checks()
112{
113	local name=$1
114	local addr=$2
115	local proto=$3
116
117	[ "$proto" == 6 ] && addr="[$addr]"
118
119	$NS_EXEC socat - tcp${proto}-listen:$port,reuseaddr,fork >/dev/null &
120	PID=$!
121	while ! $NS_EXEC ss -ltn | grep -q $port; do ((i++)); sleep 0.01; done
122
123	cat $TMPFILE | timeout 1 socat -u STDIN TCP:$addr:$port
124	log_test $? 0 "$name - copy file w/ TSO"
125
126	ethtool -K veth0 tso off
127
128	cat $TMPFILE | timeout 1 socat -u STDIN TCP:$addr:$port
129	log_test $? 0 "$name - copy file w/ GSO"
130
131	ethtool -K veth0 tso on
132
133	kill $PID
134	PID=
135}
136
137gre6_gso_test()
138{
139	local port=7777
140
141	setup
142
143	a1=$(get_linklocal veth0)
144	a2=$(get_linklocal veth0 $ns1)
145
146	gre_create_tun $a1 $a2
147
148	ip  addr add 172.16.2.1/24 dev gre1
149	$IP addr add 172.16.2.2/24 dev gre1
150
151	ip  -6 addr add 2001:db8:1::1/64 dev gre1 nodad
152	$IP -6 addr add 2001:db8:1::2/64 dev gre1 nodad
153
154	sleep 2
155
156	gre_gst_test_checks GREv6/v4 172.16.2.2 4
157	gre_gst_test_checks GREv6/v6 2001:db8:1::2 6
158
159	cleanup
160}
161
162gre_gso_test()
163{
164	gre6_gso_test
165}
166
167################################################################################
168# usage
169
170usage()
171{
172	cat <<EOF
173usage: ${0##*/} OPTS
174
175        -t <test>   Test(s) to run (default: all)
176                    (options: $TESTS)
177        -p          Pause on fail
178        -P          Pause after each test before cleanup
179        -v          verbose mode (show commands and output)
180EOF
181}
182
183################################################################################
184# main
185
186while getopts :t:pPhv o
187do
188	case $o in
189		t) TESTS=$OPTARG;;
190		p) PAUSE_ON_FAIL=yes;;
191		P) PAUSE=yes;;
192		v) VERBOSE=$(($VERBOSE + 1));;
193		h) usage; exit 0;;
194		*) usage; exit 1;;
195	esac
196done
197
198PEER_CMD="ip netns exec ${PEER_NS}"
199
200# make sure we don't pause twice
201[ "${PAUSE}" = "yes" ] && PAUSE_ON_FAIL=no
202
203if [ "$(id -u)" -ne 0 ];then
204	echo "SKIP: Need root privileges"
205	exit $ksft_skip;
206fi
207
208if [ ! -x "$(command -v ip)" ]; then
209	echo "SKIP: Could not run test without ip tool"
210	exit $ksft_skip
211fi
212
213if [ ! -x "$(command -v socat)" ]; then
214	echo "SKIP: Could not run test without socat tool"
215	exit $ksft_skip
216fi
217
218# start clean
219cleanup &> /dev/null
220
221for t in $TESTS
222do
223	case $t in
224	gre_gso)		gre_gso_test;;
225
226	help) echo "Test names: $TESTS"; exit 0;;
227	esac
228done
229
230if [ "$TESTS" != "none" ]; then
231	printf "\nTests passed: %3d\n" ${nsuccess}
232	printf "Tests failed: %3d\n"   ${nfail}
233fi
234
235exit $ret