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-$(mktemp -u XXXXXX)"
7
8cleanup() {
9 local -r jobs="$(jobs -p)"
10 local -r ns="$(ip netns list|grep $PEER_NS)"
11
12 [ -n "${jobs}" ] && kill -INT ${jobs} 2>/dev/null
13 [ -n "$ns" ] && ip netns del $ns 2>/dev/null
14}
15trap cleanup EXIT
16
17run_one() {
18 # use 'rx' as separator between sender args and receiver args
19 local -r all="$@"
20 local -r tx_args=${all%rx*}
21 local rx_args=${all#*rx}
22
23
24
25 ip netns add "${PEER_NS}"
26 ip -netns "${PEER_NS}" link set lo up
27 ip link add type veth
28 ip link set dev veth0 up
29 ip addr add dev veth0 192.168.1.2/24
30 ip addr add dev veth0 2001:db8::2/64 nodad
31
32 ip link set dev veth1 netns "${PEER_NS}"
33 ip -netns "${PEER_NS}" addr add dev veth1 192.168.1.1/24
34 ip -netns "${PEER_NS}" addr add dev veth1 2001:db8::1/64 nodad
35 ip -netns "${PEER_NS}" link set dev veth1 up
36 ip netns exec "${PEER_NS}" ethtool -K veth1 rx-gro-list on
37
38
39 ip -n "${PEER_NS}" link set veth1 xdp object ../bpf/xdp_dummy.o section xdp
40 tc -n "${PEER_NS}" qdisc add dev veth1 clsact
41 tc -n "${PEER_NS}" filter add dev veth1 ingress prio 4 protocol ipv6 bpf object-file ../bpf/nat6to4.o section schedcls/ingress6/nat_6 direct-action
42 tc -n "${PEER_NS}" filter add dev veth1 egress prio 4 protocol ip bpf object-file ../bpf/nat6to4.o section schedcls/egress4/snat4 direct-action
43 echo ${rx_args}
44 ip netns exec "${PEER_NS}" ./udpgso_bench_rx ${rx_args} -r &
45
46 # Hack: let bg programs complete the startup
47 sleep 0.1
48 ./udpgso_bench_tx ${tx_args}
49}
50
51run_in_netns() {
52 local -r args=$@
53 echo ${args}
54 ./in_netns.sh $0 __subprocess ${args}
55}
56
57run_udp() {
58 local -r args=$@
59
60 echo "udp gso - over veth touching data"
61 run_in_netns ${args} -u -S 0 rx -4 -v
62
63 echo "udp gso and gro - over veth touching data"
64 run_in_netns ${args} -S 0 rx -4 -G
65}
66
67run_tcp() {
68 local -r args=$@
69
70 echo "tcp - over veth touching data"
71 run_in_netns ${args} -t rx -4 -t
72}
73
74run_all() {
75 local -r core_args="-l 4"
76 local -r ipv4_args="${core_args} -4 -D 192.168.1.1"
77 local -r ipv6_args="${core_args} -6 -D 2001:db8::1"
78
79 echo "ipv6"
80 run_tcp "${ipv6_args}"
81 run_udp "${ipv6_args}"
82}
83
84if [ ! -f ../bpf/xdp_dummy.o ]; then
85 echo "Missing xdp_dummy helper. Build bpf selftest first"
86 exit -1
87fi
88
89if [ ! -f bpf/nat6to4.o ]; then
90 echo "Missing nat6to4 helper. Build bpfnat6to4.o selftest first"
91 exit -1
92fi
93
94if [[ $# -eq 0 ]]; then
95 run_all
96elif [[ $1 == "__subprocess" ]]; then
97 shift
98 run_one $@
99else
100 run_in_netns $@
101fi