[linux-2.6-block.git] / samples / bpf / test_lwt_bpf.sh

#!/bin/bash
# SPDX-License-Identifier: GPL-2.0

# Uncomment to see generated bytecode
#VERBOSE=verbose

NS1=lwt_ns1
NS2=lwt_ns2
VETH0=tst_lwt1a
VETH1=tst_lwt1b
VETH2=tst_lwt2a
VETH3=tst_lwt2b
IPVETH0="192.168.254.1"
IPVETH1="192.168.254.2"
IPVETH1b="192.168.254.3"

IPVETH2="192.168.111.1"
IPVETH3="192.168.111.2"

IP_LOCAL="192.168.99.1"

PROG_SRC="test_lwt_bpf.c"
BPF_PROG="test_lwt_bpf.o"
TRACE_ROOT=/sys/kernel/tracing
CONTEXT_INFO=$(cat ${TRACE_ROOT}/trace_options | grep context)

function lookup_mac()
{
	set +x
	if [ ! -z "$2" ]; then
		MAC=$(ip netns exec $2 ip link show $1 | grep ether | awk '{print $2}')
	else
		MAC=$(ip link show $1 | grep ether | awk '{print $2}')
	fi
	MAC="${MAC//:/}"
	echo "0x${MAC:10:2}${MAC:8:2}${MAC:6:2}${MAC:4:2}${MAC:2:2}${MAC:0:2}"
	set -x
}

function cleanup {
	set +ex
	rm $BPF_PROG 2> /dev/null
	ip link del $VETH0 2> /dev/null
	ip link del $VETH1 2> /dev/null
	ip link del $VETH2 2> /dev/null
	ip link del $VETH3 2> /dev/null
	ip netns exec $NS1 killall netserver
	ip netns delete $NS1 2> /dev/null
	ip netns delete $NS2 2> /dev/null
	set -ex
}

function setup_one_veth {
	ip netns add $1
	ip link add $2 type veth peer name $3
	ip link set dev $2 up
	ip addr add $4/24 dev $2
	ip link set $3 netns $1
	ip netns exec $1 ip link set dev $3 up
	ip netns exec $1 ip addr add $5/24 dev $3

	if [ "$6" ]; then
		ip netns exec $1 ip addr add $6/32 dev $3
	fi
}

function get_trace {
	set +x
	cat ${TRACE_ROOT}/trace | grep -v '^#'
	set -x
}

function cleanup_routes {
	ip route del ${IPVETH1}/32 dev $VETH0 2> /dev/null || true
	ip route del table local local ${IP_LOCAL}/32 dev lo 2> /dev/null || true
}

function install_test {
	cleanup_routes
	cp /dev/null ${TRACE_ROOT}/trace

	OPTS="encap bpf headroom 14 $1 obj $BPF_PROG section $2 $VERBOSE"

	if [ "$1" == "in" ];  then
		ip route add table local local ${IP_LOCAL}/32 $OPTS dev lo
	else
		ip route add ${IPVETH1}/32 $OPTS dev $VETH0
	fi
}

function remove_prog {
	if [ "$1" == "in" ];  then
		ip route del table local local ${IP_LOCAL}/32 dev lo
	else
		ip route del ${IPVETH1}/32 dev $VETH0
	fi
}

function filter_trace {
	# Add newline to allow starting EXPECT= variables on newline
	NL=$'\n'
	echo "${NL}$*" | sed -e 's/bpf_trace_printk: //g'
}

function expect_fail {
	set +x
	echo "FAIL:"
	echo "Expected: $1"
	echo "Got: $2"
	set -x
	exit 1
}

function match_trace {
	set +x
	RET=0
	TRACE=$1
	EXPECT=$2
	GOT="$(filter_trace "$TRACE")"

	[ "$GOT" != "$EXPECT" ] && {
		expect_fail "$EXPECT" "$GOT"
		RET=1
	}
	set -x
	return $RET
}

function test_start {
	set +x
	echo "----------------------------------------------------------------"
	echo "Starting test: $*"
	echo "----------------------------------------------------------------"
	set -x
}

function failure {
	get_trace
	echo "FAIL: $*"
	exit 1
}

function test_ctx_xmit {
	test_start "test_ctx on lwt xmit"
	install_test xmit test_ctx
	ping -c 3 $IPVETH1 || {
		failure "test_ctx xmit: packets are dropped"
	}
	match_trace "$(get_trace)" "
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX" || exit 1
	remove_prog xmit
}

function test_ctx_out {
	test_start "test_ctx on lwt out"
	install_test out test_ctx
	ping -c 3 $IPVETH1 || {
		failure "test_ctx out: packets are dropped"
	}
	match_trace "$(get_trace)" "
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 0 ifindex 0
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 0 ifindex 0
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 0 ifindex 0" || exit 1
	remove_prog out
}

function test_ctx_in {
	test_start "test_ctx on lwt in"
	install_test in test_ctx
	ping -c 3 $IP_LOCAL || {
		failure "test_ctx out: packets are dropped"
	}
	# We will both request & reply packets as the packets will
	# be from $IP_LOCAL => $IP_LOCAL
	match_trace "$(get_trace)" "
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 1 ifindex 1
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 1 ifindex 1
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 1 ifindex 1
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 1 ifindex 1
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 1 ifindex 1
len 84 hash 0 protocol 8
cb 1234 ingress_ifindex 1 ifindex 1" || exit 1
	remove_prog in
}

function test_data {
	test_start "test_data on lwt $1"
	install_test $1 test_data
	ping -c 3 $IPVETH1 || {
		failure "test_data ${1}: packets are dropped"
	}
	match_trace "$(get_trace)" "
src: 1fea8c0 dst: 2fea8c0
src: 1fea8c0 dst: 2fea8c0
src: 1fea8c0 dst: 2fea8c0" || exit 1
	remove_prog $1
}

function test_data_in {
	test_start "test_data on lwt in"
	install_test in test_data
	ping -c 3 $IP_LOCAL || {
		failure "test_data in: packets are dropped"
	}
	# We will both request & reply packets as the packets will
	# be from $IP_LOCAL => $IP_LOCAL
	match_trace "$(get_trace)" "
src: 163a8c0 dst: 163a8c0
src: 163a8c0 dst: 163a8c0
src: 163a8c0 dst: 163a8c0
src: 163a8c0 dst: 163a8c0
src: 163a8c0 dst: 163a8c0
src: 163a8c0 dst: 163a8c0" || exit 1
	remove_prog in
}

function test_cb {
	test_start "test_cb on lwt $1"
	install_test $1 test_cb
	ping -c 3 $IPVETH1 || {
		failure "test_cb ${1}: packets are dropped"
	}
	match_trace "$(get_trace)" "
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0" || exit 1
	remove_prog $1
}

function test_cb_in {
	test_start "test_cb on lwt in"
	install_test in test_cb
	ping -c 3 $IP_LOCAL || {
		failure "test_cb in: packets are dropped"
	}
	# We will both request & reply packets as the packets will
	# be from $IP_LOCAL => $IP_LOCAL
	match_trace "$(get_trace)" "
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0
cb0: 0 cb1: 0 cb2: 0
cb3: 0 cb4: 0" || exit 1
	remove_prog in
}

function test_drop_all {
	test_start "test_drop_all on lwt $1"
	install_test $1 drop_all
	ping -c 3 $IPVETH1 && {
		failure "test_drop_all ${1}: Unexpected success of ping"
	}
	match_trace "$(get_trace)" "
dropping with: 2
dropping with: 2
dropping with: 2" || exit 1
	remove_prog $1
}

function test_drop_all_in {
	test_start "test_drop_all on lwt in"
	install_test in drop_all
	ping -c 3 $IP_LOCAL && {
		failure "test_drop_all in: Unexpected success of ping"
	}
	match_trace "$(get_trace)" "
dropping with: 2
dropping with: 2
dropping with: 2" || exit 1
	remove_prog in
}

function test_push_ll_and_redirect {
	test_start "test_push_ll_and_redirect on lwt xmit"
	install_test xmit push_ll_and_redirect
	ping -c 3 $IPVETH1 || {
		failure "Redirected packets appear to be dropped"
	}
	match_trace "$(get_trace)" "
redirected to $DST_IFINDEX
redirected to $DST_IFINDEX
redirected to $DST_IFINDEX" || exit 1
	remove_prog xmit
}

function test_no_l2_and_redirect {
	test_start "test_no_l2_and_redirect on lwt xmit"
	install_test xmit fill_garbage_and_redirect
	ping -c 3 $IPVETH1 && {
		failure "Unexpected success despite lack of L2 header"
	}
	match_trace "$(get_trace)" "
redirected to $DST_IFINDEX
redirected to $DST_IFINDEX
redirected to $DST_IFINDEX" || exit 1
	remove_prog xmit
}

function test_rewrite {
	test_start "test_rewrite on lwt xmit"
	install_test xmit test_rewrite
	ping -c 3 $IPVETH1 || {
		failure "Rewritten packets appear to be dropped"
	}
	match_trace "$(get_trace)" "
out: rewriting from 2fea8c0 to 3fea8c0
out: rewriting from 2fea8c0 to 3fea8c0
out: rewriting from 2fea8c0 to 3fea8c0" || exit 1
	remove_prog out
}

function test_fill_garbage {
	test_start "test_fill_garbage on lwt xmit"
	install_test xmit fill_garbage
	ping -c 3 $IPVETH1 && {
		failure "test_drop_all ${1}: Unexpected success of ping"
	}
	match_trace "$(get_trace)" "
Set initial 96 bytes of header to FF
Set initial 96 bytes of header to FF
Set initial 96 bytes of header to FF" || exit 1
	remove_prog xmit
}

function test_netperf_nop {
	test_start "test_netperf_nop on lwt xmit"
	install_test xmit nop
	netperf -H $IPVETH1 -t TCP_STREAM || {
		failure "packets appear to be dropped"
	}
	match_trace "$(get_trace)" ""|| exit 1
	remove_prog xmit
}

function test_netperf_redirect {
	test_start "test_netperf_redirect on lwt xmit"
	install_test xmit push_ll_and_redirect_silent
	netperf -H $IPVETH1 -t TCP_STREAM || {
		failure "Rewritten packets appear to be dropped"
	}
	match_trace "$(get_trace)" ""|| exit 1
	remove_prog xmit
}

cleanup
setup_one_veth $NS1 $VETH0 $VETH1 $IPVETH0 $IPVETH1 $IPVETH1b
setup_one_veth $NS2 $VETH2 $VETH3 $IPVETH2 $IPVETH3
ip netns exec $NS1 netserver
echo 1 > ${TRACE_ROOT}/tracing_on
echo nocontext-info > ${TRACE_ROOT}/trace_options

DST_MAC=$(lookup_mac $VETH1 $NS1)
SRC_MAC=$(lookup_mac $VETH0)
DST_IFINDEX=$(cat /sys/class/net/$VETH0/ifindex)

CLANG_OPTS="-O2 --target=bpf -I ../include/"
CLANG_OPTS+=" -DSRC_MAC=$SRC_MAC -DDST_MAC=$DST_MAC -DDST_IFINDEX=$DST_IFINDEX"
clang $CLANG_OPTS -c $PROG_SRC -o $BPF_PROG

test_ctx_xmit
test_ctx_out
test_ctx_in
test_data "xmit"
test_data "out"
test_data_in
test_cb "xmit"
test_cb "out"
test_cb_in
test_drop_all "xmit"
test_drop_all "out"
test_drop_all_in
test_rewrite
test_push_ll_and_redirect
test_no_l2_and_redirect
test_fill_garbage
test_netperf_nop
test_netperf_redirect

cleanup
echo 0 > ${TRACE_ROOT}/tracing_on
echo $CONTEXT_INFO > ${TRACE_ROOT}/trace_options
exit 0
Commit	Line	Data
f74599f7	1	#!/bin/bash
b2441318	2	# SPDX-License-Identifier: GPL-2.0
f74599f7 TG	3
	4	# Uncomment to see generated bytecode
	5	#VERBOSE=verbose
	6
	7	NS1=lwt_ns1
	8	NS2=lwt_ns2
	9	VETH0=tst_lwt1a
	10	VETH1=tst_lwt1b
	11	VETH2=tst_lwt2a
	12	VETH3=tst_lwt2b
	13	IPVETH0="192.168.254.1"
	14	IPVETH1="192.168.254.2"
	15	IPVETH1b="192.168.254.3"
	16
	17	IPVETH2="192.168.111.1"
	18	IPVETH3="192.168.111.2"
	19
	20	IP_LOCAL="192.168.99.1"
	21
f20f064e DL	22	PROG_SRC="test_lwt_bpf.c"
f20f064e DL	23	BPF_PROG="test_lwt_bpf.o"
27d7fdf0	24	TRACE_ROOT=/sys/kernel/tracing
dac808c9	25	CONTEXT_INFO=$(cat ${TRACE_ROOT}/trace_options \| grep context)
f74599f7 TG	26
	27	function lookup_mac()
	28	{
	29	set +x
	30	if [ ! -z "$2" ]; then
	31	MAC=$(ip netns exec $2 ip link show $1 \| grep ether \| awk '{print $2}')
	32	else
	33	MAC=$(ip link show $1 \| grep ether \| awk '{print $2}')
	34	fi
	35	MAC="${MAC//:/}"
	36	echo "0x${MAC:10:2}${MAC:8:2}${MAC:6:2}${MAC:4:2}${MAC:2:2}${MAC:0:2}"
	37	set -x
	38	}
	39
	40	function cleanup {
	41	set +ex
f20f064e	42	rm $BPF_PROG 2> /dev/null
f74599f7 TG	43	ip link del $VETH0 2> /dev/null
	44	ip link del $VETH1 2> /dev/null
	45	ip link del $VETH2 2> /dev/null
	46	ip link del $VETH3 2> /dev/null
	47	ip netns exec $NS1 killall netserver
	48	ip netns delete $NS1 2> /dev/null
	49	ip netns delete $NS2 2> /dev/null
	50	set -ex
	51	}
	52
	53	function setup_one_veth {
	54	ip netns add $1
	55	ip link add $2 type veth peer name $3
	56	ip link set dev $2 up
	57	ip addr add $4/24 dev $2
	58	ip link set $3 netns $1
	59	ip netns exec $1 ip link set dev $3 up
	60	ip netns exec $1 ip addr add $5/24 dev $3
	61
	62	if [ "$6" ]; then
	63	ip netns exec $1 ip addr add $6/32 dev $3
	64	fi
	65	}
	66
	67	function get_trace {
	68	set +x
	69	cat ${TRACE_ROOT}/trace \| grep -v '^#'
	70	set -x
	71	}
	72
	73	function cleanup_routes {
	74	ip route del ${IPVETH1}/32 dev $VETH0 2> /dev/null \|\| true
	75	ip route del table local local ${IP_LOCAL}/32 dev lo 2> /dev/null \|\| true
	76	}
	77
	78	function install_test {
	79	cleanup_routes
	80	cp /dev/null ${TRACE_ROOT}/trace
	81
f20f064e	82	OPTS="encap bpf headroom 14 $1 obj $BPF_PROG section $2 $VERBOSE"
f74599f7 TG	83
	84	if [ "$1" == "in" ]; then
	85	ip route add table local local ${IP_LOCAL}/32 $OPTS dev lo
	86	else
	87	ip route add ${IPVETH1}/32 $OPTS dev $VETH0
	88	fi
	89	}
	90
	91	function remove_prog {
	92	if [ "$1" == "in" ]; then
	93	ip route del table local local ${IP_LOCAL}/32 dev lo
	94	else
	95	ip route del ${IPVETH1}/32 dev $VETH0
	96	fi
	97	}
	98
	99	function filter_trace {
	100	# Add newline to allow starting EXPECT= variables on newline
	101	NL=$'\n'
dac808c9	102	echo "${NL}$*" \| sed -e 's/bpf_trace_printk: //g'
f74599f7 TG	103	}
	104
	105	function expect_fail {
	106	set +x
	107	echo "FAIL:"
	108	echo "Expected: $1"
	109	echo "Got: $2"
	110	set -x
	111	exit 1
	112	}
	113
	114	function match_trace {
	115	set +x
	116	RET=0
	117	TRACE=$1
	118	EXPECT=$2
	119	GOT="$(filter_trace "$TRACE")"
	120
	121	[ "$GOT" != "$EXPECT" ] && {
	122	expect_fail "$EXPECT" "$GOT"
	123	RET=1
	124	}
	125	set -x
	126	return $RET
	127	}
	128
	129	function test_start {
	130	set +x
	131	echo "----------------------------------------------------------------"
	132	echo "Starting test: $*"
	133	echo "----------------------------------------------------------------"
	134	set -x
	135	}
	136
	137	function failure {
	138	get_trace
	139	echo "FAIL: $*"
	140	exit 1
	141	}
	142
	143	function test_ctx_xmit {
	144	test_start "test_ctx on lwt xmit"
	145	install_test xmit test_ctx
	146	ping -c 3 $IPVETH1 \|\| {
	147	failure "test_ctx xmit: packets are dropped"
	148	}
	149	match_trace "$(get_trace)" "
	150	len 84 hash 0 protocol 8
	151	cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
	152	len 84 hash 0 protocol 8
	153	cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX
	154	len 84 hash 0 protocol 8
	155	cb 1234 ingress_ifindex 0 ifindex $DST_IFINDEX" \|\| exit 1
	156	remove_prog xmit
	157	}
	158
	159	function test_ctx_out {
	160	test_start "test_ctx on lwt out"
	161	install_test out test_ctx
	162	ping -c 3 $IPVETH1 \|\| {
	163	failure "test_ctx out: packets are dropped"
	164	}
	165	match_trace "$(get_trace)" "
dac808c9	166	len 84 hash 0 protocol 8
f74599f7	167	cb 1234 ingress_ifindex 0 ifindex 0
dac808c9	168	len 84 hash 0 protocol 8
f74599f7	169	cb 1234 ingress_ifindex 0 ifindex 0
dac808c9	170	len 84 hash 0 protocol 8
f74599f7 TG	171	cb 1234 ingress_ifindex 0 ifindex 0" \|\| exit 1
	172	remove_prog out
	173	}
	174
	175	function test_ctx_in {
	176	test_start "test_ctx on lwt in"
	177	install_test in test_ctx
	178	ping -c 3 $IP_LOCAL \|\| {
	179	failure "test_ctx out: packets are dropped"
	180	}
	181	# We will both request & reply packets as the packets will
	182	# be from $IP_LOCAL => $IP_LOCAL
	183	match_trace "$(get_trace)" "
	184	len 84 hash 0 protocol 8
	185	cb 1234 ingress_ifindex 1 ifindex 1
	186	len 84 hash 0 protocol 8
	187	cb 1234 ingress_ifindex 1 ifindex 1
	188	len 84 hash 0 protocol 8
	189	cb 1234 ingress_ifindex 1 ifindex 1
	190	len 84 hash 0 protocol 8
	191	cb 1234 ingress_ifindex 1 ifindex 1
	192	len 84 hash 0 protocol 8
	193	cb 1234 ingress_ifindex 1 ifindex 1
	194	len 84 hash 0 protocol 8
	195	cb 1234 ingress_ifindex 1 ifindex 1" \|\| exit 1
	196	remove_prog in
	197	}
	198
	199	function test_data {
	200	test_start "test_data on lwt $1"
	201	install_test $1 test_data
	202	ping -c 3 $IPVETH1 \|\| {
	203	failure "test_data ${1}: packets are dropped"
	204	}
	205	match_trace "$(get_trace)" "
	206	src: 1fea8c0 dst: 2fea8c0
	207	src: 1fea8c0 dst: 2fea8c0
	208	src: 1fea8c0 dst: 2fea8c0" \|\| exit 1
	209	remove_prog $1
	210	}
	211
	212	function test_data_in {
	213	test_start "test_data on lwt in"
	214	install_test in test_data
	215	ping -c 3 $IP_LOCAL \|\| {
	216	failure "test_data in: packets are dropped"
	217	}
	218	# We will both request & reply packets as the packets will
	219	# be from $IP_LOCAL => $IP_LOCAL
	220	match_trace "$(get_trace)" "
	221	src: 163a8c0 dst: 163a8c0
	222	src: 163a8c0 dst: 163a8c0
	223	src: 163a8c0 dst: 163a8c0
	224	src: 163a8c0 dst: 163a8c0
	225	src: 163a8c0 dst: 163a8c0
	226	src: 163a8c0 dst: 163a8c0" \|\| exit 1
	227	remove_prog in
	228	}
	229
	230	function test_cb {
	231	test_start "test_cb on lwt $1"
	232	install_test $1 test_cb
	233	ping -c 3 $IPVETH1 \|\| {
	234	failure "test_cb ${1}: packets are dropped"
235	}
236	match_trace "$(get_trace)" "
237	cb0: 0 cb1: 0 cb2: 0
238	cb3: 0 cb4: 0
239	cb0: 0 cb1: 0 cb2: 0
240	cb3: 0 cb4: 0
241	cb0: 0 cb1: 0 cb2: 0
242	cb3: 0 cb4: 0" \|\| exit 1
243	remove_prog $1
244	}
245
246	function test_cb_in {
247	test_start "test_cb on lwt in"
248	install_test in test_cb
249	ping -c 3 $IP_LOCAL \|\| {
250	failure "test_cb in: packets are dropped"
251	}
252	# We will both request & reply packets as the packets will
253	# be from $IP_LOCAL => $IP_LOCAL
254	match_trace "$(get_trace)" "
255	cb0: 0 cb1: 0 cb2: 0
256	cb3: 0 cb4: 0
257	cb0: 0 cb1: 0 cb2: 0
258	cb3: 0 cb4: 0
259	cb0: 0 cb1: 0 cb2: 0
260	cb3: 0 cb4: 0
261	cb0: 0 cb1: 0 cb2: 0
262	cb3: 0 cb4: 0
263	cb0: 0 cb1: 0 cb2: 0
264	cb3: 0 cb4: 0
265	cb0: 0 cb1: 0 cb2: 0
266	cb3: 0 cb4: 0" \|\| exit 1
267	remove_prog in
268	}
269
270	function test_drop_all {
271	test_start "test_drop_all on lwt $1"
272	install_test $1 drop_all
273	ping -c 3 $IPVETH1 && {
274	failure "test_drop_all ${1}: Unexpected success of ping"
275	}
276	match_trace "$(get_trace)" "
277	dropping with: 2
278	dropping with: 2
279	dropping with: 2" \|\| exit 1
280	remove_prog $1
281	}
282
283	function test_drop_all_in {
284	test_start "test_drop_all on lwt in"
285	install_test in drop_all
286	ping -c 3 $IP_LOCAL && {
287	failure "test_drop_all in: Unexpected success of ping"
288	}
289	match_trace "$(get_trace)" "
290	dropping with: 2
291	dropping with: 2
292	dropping with: 2" \|\| exit 1
293	remove_prog in
294	}
295
296	function test_push_ll_and_redirect {
297	test_start "test_push_ll_and_redirect on lwt xmit"
298	install_test xmit push_ll_and_redirect
299	ping -c 3 $IPVETH1 \|\| {
300	failure "Redirected packets appear to be dropped"
301	}
302	match_trace "$(get_trace)" "
303	redirected to $DST_IFINDEX
304	redirected to $DST_IFINDEX
305	redirected to $DST_IFINDEX" \|\| exit 1
306	remove_prog xmit
307	}
308
309	function test_no_l2_and_redirect {
310	test_start "test_no_l2_and_redirect on lwt xmit"
311	install_test xmit fill_garbage_and_redirect
312	ping -c 3 $IPVETH1 && {
313	failure "Unexpected success despite lack of L2 header"
314	}
315	match_trace "$(get_trace)" "
316	redirected to $DST_IFINDEX
317	redirected to $DST_IFINDEX
318	redirected to $DST_IFINDEX" \|\| exit 1
319	remove_prog xmit
320	}
321
322	function test_rewrite {
323	test_start "test_rewrite on lwt xmit"
324	install_test xmit test_rewrite
325	ping -c 3 $IPVETH1 \|\| {
326	failure "Rewritten packets appear to be dropped"
327	}
328	match_trace "$(get_trace)" "
329	out: rewriting from 2fea8c0 to 3fea8c0
330	out: rewriting from 2fea8c0 to 3fea8c0
331	out: rewriting from 2fea8c0 to 3fea8c0" \|\| exit 1
332	remove_prog out
333	}
334
335	function test_fill_garbage {
336	test_start "test_fill_garbage on lwt xmit"
337	install_test xmit fill_garbage
338	ping -c 3 $IPVETH1 && {
339	failure "test_drop_all ${1}: Unexpected success of ping"
340	}
341	match_trace "$(get_trace)" "
342	Set initial 96 bytes of header to FF
343	Set initial 96 bytes of header to FF
344	Set initial 96 bytes of header to FF" \|\| exit 1
345	remove_prog xmit
346	}
347
348	function test_netperf_nop {
349	test_start "test_netperf_nop on lwt xmit"
350	install_test xmit nop
351	netperf -H $IPVETH1 -t TCP_STREAM \|\| {
352	failure "packets appear to be dropped"
353	}
354	match_trace "$(get_trace)" ""\|\| exit 1
355	remove_prog xmit
356	}
357
358	function test_netperf_redirect {
359	test_start "test_netperf_redirect on lwt xmit"
360	install_test xmit push_ll_and_redirect_silent
361	netperf -H $IPVETH1 -t TCP_STREAM \|\| {
362	failure "Rewritten packets appear to be dropped"
363	}
364	match_trace "$(get_trace)" ""\|\| exit 1
365	remove_prog xmit
366	}
367
368	cleanup
369	setup_one_veth $NS1 $VETH0 $VETH1 $IPVETH0 $IPVETH1 $IPVETH1b
370	setup_one_veth $NS2 $VETH2 $VETH3 $IPVETH2 $IPVETH3
371	ip netns exec $NS1 netserver
372	echo 1 > ${TRACE_ROOT}/tracing_on
dac808c9	373	echo nocontext-info > ${TRACE_ROOT}/trace_options
f74599f7 TG	374
	375	DST_MAC=$(lookup_mac $VETH1 $NS1)
	376	SRC_MAC=$(lookup_mac $VETH0)
	377	DST_IFINDEX=$(cat /sys/class/net/$VETH0/ifindex)
	378
bbaf1ff0	379	CLANG_OPTS="-O2 --target=bpf -I ../include/"
f74599f7	380	CLANG_OPTS+=" -DSRC_MAC=$SRC_MAC -DDST_MAC=$DST_MAC -DDST_IFINDEX=$DST_IFINDEX"
f20f064e	381	clang $CLANG_OPTS -c $PROG_SRC -o $BPF_PROG
f74599f7 TG	382
	383	test_ctx_xmit
	384	test_ctx_out
	385	test_ctx_in
	386	test_data "xmit"
	387	test_data "out"
	388	test_data_in
	389	test_cb "xmit"
	390	test_cb "out"
	391	test_cb_in
	392	test_drop_all "xmit"
	393	test_drop_all "out"
	394	test_drop_all_in
	395	test_rewrite
	396	test_push_ll_and_redirect
	397	test_no_l2_and_redirect
	398	test_fill_garbage
	399	test_netperf_nop
	400	test_netperf_redirect
	401
	402	cleanup
	403	echo 0 > ${TRACE_ROOT}/tracing_on
dac808c9	404	echo $CONTEXT_INFO > ${TRACE_ROOT}/trace_options
f74599f7	405	exit 0