tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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