summaryrefslogtreecommitdiffstats
path: root/tools/testing/selftests/net/udpgro.sh
blob: 3f09ac78f4452d8b00f11cd230b42b3641cf5dd8 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Run a series of udpgro functional tests.

readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"

BPF_FILE="xdp_dummy.o"

# set global exit status, but never reset nonzero one.
check_err()
{
	if [ $ret -eq 0 ]; then
		ret=$1
	fi
}

cleanup() {
	local -r jobs="$(jobs -p)"
	local -r ns="$(ip netns list|grep $PEER_NS)"

	[ -n "${jobs}" ] && kill -1 ${jobs} 2>/dev/null
	[ -n "$ns" ] && ip netns del $ns 2>/dev/null
}
trap cleanup EXIT

cfg_veth() {
	ip netns add "${PEER_NS}"
	ip -netns "${PEER_NS}" link set lo up
	ip link add type veth
	ip link set dev veth0 up
	ip addr add dev veth0 192.168.1.2/24
	ip addr add dev veth0 2001:db8::2/64 nodad

	ip link set dev veth1 netns "${PEER_NS}"
	ip -netns "${PEER_NS}" addr add dev veth1 192.168.1.1/24
	ip -netns "${PEER_NS}" addr add dev veth1 2001:db8::1/64 nodad
	ip -netns "${PEER_NS}" link set dev veth1 up
	ip -n "${PEER_NS}" link set veth1 xdp object ${BPF_FILE} section xdp
}

run_one() {
	# use 'rx' as separator between sender args and receiver args
	local -r all="$@"
	local -r tx_args=${all%rx*}
	local -r rx_args=${all#*rx}

	cfg_veth

	ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${rx_args} && \
		echo "ok" || \
		echo "failed" &

	# Hack: let bg programs complete the startup
	sleep 0.2
	./udpgso_bench_tx ${tx_args}
	ret=$?
	wait $(jobs -p)
	return $ret
}

run_test() {
	local -r args=$@

	printf " %-40s" "$1"
	./in_netns.sh $0 __subprocess $2 rx -G -r $3
}

run_one_nat() {
	# use 'rx' as separator between sender args and receiver args
	local addr1 addr2 pid family="" ipt_cmd=ip6tables
	local -r all="$@"
	local -r tx_args=${all%rx*}
	local -r rx_args=${all#*rx}

	if [[ ${tx_args} = *-4* ]]; then
		ipt_cmd=iptables
		family=-4
		addr1=192.168.1.1
		addr2=192.168.1.3/24
	else
		addr1=2001:db8::1
		addr2="2001:db8::3/64 nodad"
	fi

	cfg_veth
	ip -netns "${PEER_NS}" addr add dev veth1 ${addr2}

	# fool the GRO engine changing the destination address ...
	ip netns exec "${PEER_NS}" $ipt_cmd -t nat -I PREROUTING -d ${addr1} -j DNAT --to-destination ${addr2%/*}

	# ... so that GRO will match the UDP_GRO enabled socket, but packets
	# will land on the 'plain' one
	ip netns exec "${PEER_NS}" ./udpgso_bench_rx -G ${family} -b ${addr1} -n 0 &
	pid=$!
	ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${family} -b ${addr2%/*} ${rx_args} && \
		echo "ok" || \
		echo "failed"&

	sleep 0.1
	./udpgso_bench_tx ${tx_args}
	ret=$?
	kill -INT $pid
	wait $(jobs -p)
	return $ret
}

run_one_2sock() {
	# use 'rx' as separator between sender args and receiver args
	local -r all="$@"
	local -r tx_args=${all%rx*}
	local -r rx_args=${all#*rx}

	cfg_veth

	ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 1000 -R 10 ${rx_args} -p 12345 &
	ip netns exec "${PEER_NS}" ./udpgso_bench_rx -C 2000 -R 10 ${rx_args} && \
		echo "ok" || \
		echo "failed" &

	# Hack: let bg programs complete the startup
	sleep 0.2
	./udpgso_bench_tx ${tx_args} -p 12345
	sleep 0.1
	# first UDP GSO socket should be closed at this point
	./udpgso_bench_tx ${tx_args}
	ret=$?
	wait $(jobs -p)
	return $ret
}

run_nat_test() {
	local -r args=$@

	printf " %-40s" "$1"
	./in_netns.sh $0 __subprocess_nat $2 rx -r $3
}

run_2sock_test() {
	local -r args=$@

	printf " %-40s" "$1"
	./in_netns.sh $0 __subprocess_2sock $2 rx -G -r $3
}

run_all() {
	local -r core_args="-l 4"
	local -r ipv4_args="${core_args} -4 -D 192.168.1.1"
	local -r ipv6_args="${core_args} -6 -D 2001:db8::1"
	ret=0

	echo "ipv4"
	run_test "no GRO" "${ipv4_args} -M 10 -s 1400" "-4 -n 10 -l 1400"
	check_err $?

	# explicitly check we are not receiving UDP_SEGMENT cmsg (-S -1)
	# when GRO does not take place
	run_test "no GRO chk cmsg" "${ipv4_args} -M 10 -s 1400" "-4 -n 10 -l 1400 -S -1"
	check_err $?

	# the GSO packets are aggregated because:
	# * veth schedule napi after each xmit
	# * segmentation happens in BH context, veth napi poll is delayed after
	#   the transmission of the last segment
	run_test "GRO" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720"
	check_err $?
	run_test "GRO chk cmsg" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720 -S 1472"
	check_err $?
	run_test "GRO with custom segment size" "${ipv4_args} -M 1 -s 14720 -S 500 " "-4 -n 1 -l 14720"
	check_err $?
	run_test "GRO with custom segment size cmsg" "${ipv4_args} -M 1 -s 14720 -S 500 " "-4 -n 1 -l 14720 -S 500"
	check_err $?

	run_nat_test "bad GRO lookup" "${ipv4_args} -M 1 -s 14720 -S 0" "-n 10 -l 1472"
	check_err $?
	run_2sock_test "multiple GRO socks" "${ipv4_args} -M 1 -s 14720 -S 0 " "-4 -n 1 -l 14720 -S 1472"
	check_err $?

	echo "ipv6"
	run_test "no GRO" "${ipv6_args} -M 10 -s 1400" "-n 10 -l 1400"
	check_err $?
	run_test "no GRO chk cmsg" "${ipv6_args} -M 10 -s 1400" "-n 10 -l 1400 -S -1"
	check_err $?
	run_test "GRO" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 1 -l 14520"
	check_err $?
	run_test "GRO chk cmsg" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 1 -l 14520 -S 1452"
	check_err $?
	run_test "GRO with custom segment size" "${ipv6_args} -M 1 -s 14520 -S 500" "-n 1 -l 14520"
	check_err $?
	run_test "GRO with custom segment size cmsg" "${ipv6_args} -M 1 -s 14520 -S 500" "-n 1 -l 14520 -S 500"
	check_err $?

	run_nat_test "bad GRO lookup" "${ipv6_args} -M 1 -s 14520 -S 0" "-n 10 -l 1452"
	check_err $?
	run_2sock_test "multiple GRO socks" "${ipv6_args} -M 1 -s 14520 -S 0 " "-n 1 -l 14520 -S 1452"
	check_err $?
	return $ret
}

if [ ! -f ${BPF_FILE} ]; then
	echo "Missing ${BPF_FILE}. Run 'make' first"
	exit -1
fi

if [[ $# -eq 0 ]]; then
	run_all
elif [[ $1 == "__subprocess" ]]; then
	shift
	run_one $@
elif [[ $1 == "__subprocess_nat" ]]; then
	shift
	run_one_nat $@
elif [[ $1 == "__subprocess_2sock" ]]; then
	shift
	run_one_2sock $@
fi

exit $?