1#!/bin/bash
2# SPDX-License-Identifier: GPL-2.0
3#
4# Run a series of udpgro benchmarks
5
6readonly PEER_NS="ns-peer-$(mktemp -u XXXXXX)"
7
8BPF_FILE="../bpf/xdp_dummy.bpf.o"
9
10cleanup() {
11	local -r jobs="$(jobs -p)"
12	local -r ns="$(ip netns list|grep $PEER_NS)"
13
14	[ -n "${jobs}" ] && kill -INT ${jobs} 2>/dev/null
15	[ -n "$ns" ] && ip netns del $ns 2>/dev/null
16}
17trap cleanup EXIT
18
19run_one() {
20	# use 'rx' as separator between sender args and receiver args
21	local -r all="$@"
22	local -r tx_args=${all%rx*}
23	local rx_args=${all#*rx}
24
25
26
27	ip netns add "${PEER_NS}"
28	ip -netns "${PEER_NS}" link set lo up
29	ip link add type veth
30	ip link set dev veth0 up
31	ip addr add dev veth0 192.168.1.2/24
32	ip addr add dev veth0 2001:db8::2/64 nodad
33
34	ip link set dev veth1 netns "${PEER_NS}"
35	ip -netns "${PEER_NS}" addr add dev veth1 192.168.1.1/24
36	ip -netns "${PEER_NS}" addr add dev veth1 2001:db8::1/64 nodad
37	ip -netns "${PEER_NS}" link set dev veth1 up
38	ip netns exec "${PEER_NS}" ethtool -K veth1 rx-gro-list on
39
40
41	ip -n "${PEER_NS}" link set veth1 xdp object ${BPF_FILE} section xdp
42	tc -n "${PEER_NS}" qdisc add dev veth1 clsact
43	tc -n "${PEER_NS}" filter add dev veth1 ingress prio 4 protocol ipv6 bpf object-file nat6to4.o section schedcls/ingress6/nat_6  direct-action
44	tc -n "${PEER_NS}" filter add dev veth1 egress prio 4 protocol ip bpf object-file nat6to4.o section schedcls/egress4/snat4 direct-action
45        echo ${rx_args}
46	ip netns exec "${PEER_NS}" ./udpgso_bench_rx ${rx_args} -r &
47
48	# Hack: let bg programs complete the startup
49	sleep 0.2
50	./udpgso_bench_tx ${tx_args}
51}
52
53run_in_netns() {
54	local -r args=$@
55  echo ${args}
56	./in_netns.sh $0 __subprocess ${args}
57}
58
59run_udp() {
60	local -r args=$@
61
62	echo "udp gso - over veth touching data"
63	run_in_netns ${args} -u -S 0 rx -4 -v
64
65	echo "udp gso and gro - over veth touching data"
66	run_in_netns ${args} -S 0 rx -4 -G
67}
68
69run_tcp() {
70	local -r args=$@
71
72	echo "tcp - over veth touching data"
73	run_in_netns ${args} -t rx -4 -t
74}
75
76run_all() {
77	local -r core_args="-l 4"
78	local -r ipv4_args="${core_args} -4  -D 192.168.1.1"
79	local -r ipv6_args="${core_args} -6  -D 2001:db8::1"
80
81	echo "ipv6"
82	run_tcp "${ipv6_args}"
83	run_udp "${ipv6_args}"
84}
85
86if [ ! -f ${BPF_FILE} ]; then
87	echo "Missing ${BPF_FILE}. Build bpf selftest first"
88	exit -1
89fi
90
91if [ ! -f nat6to4.o ]; then
92	echo "Missing nat6to4 helper. Build bpf nat6to4.o selftest first"
93	exit -1
94fi
95
96if [[ $# -eq 0 ]]; then
97	run_all
98elif [[ $1 == "__subprocess" ]]; then
99	shift
100	run_one $@
101else
102	run_in_netns $@
103fi
104