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
|
#!/bin/bash
# SPDX-License-Identifier: GPL-2.0
#
# Simple tests for ipvtap
#
# The testing environment looks this way:
#
# |------HNS-------| |------PHY-------|
# | veth<----------------->veth |
# |------|--|------| |----------------|
# | |
# | | |-----TST0-------|
# | |------------|----ipvlan |
# | |----------------|
# |
# | |-----TST1-------|
# |---------------|----ipvlan |
# |----------------|
#
ALL_TESTS="
test_ip_set
"
source lib.sh
DEBUG=0
VETH_HOST=vethtst.h
VETH_PHY=vethtst.p
NS_COUNT=32
IP_ITERATIONS=1024
IPSET_TIMEOUT="60s"
ns_run() {
ns=$1
shift
if [[ "$ns" == "global" ]]; then
"$@" >/dev/null
else
ip netns exec "$ns" "$@" >/dev/null
fi
}
test_ip_setup_env() {
setup_ns NS_PHY
setup_ns HST_NS
# setup simulated other-host (phy) and host itself
ns_run "$HST_NS" ip link add $VETH_HOST type veth peer name $VETH_PHY \
netns "$NS_PHY" >/dev/null
ns_run "$HST_NS" ip link set $VETH_HOST up
ns_run "$NS_PHY" ip link set $VETH_PHY up
for ((i=0; i<NS_COUNT; i++)); do
setup_ns ipvlan_ns_$i
ns="ipvlan_ns_$i"
if [ "$DEBUG" = "1" ]; then
echo "created NS ${!ns}"
fi
if ! ns_run "$HST_NS" ip link add netns ${!ns} ipvlan0 \
link $VETH_HOST \
type ipvtap mode l2 bridge; then
exit_error "FAIL: Failed to configure ipvlan link."
fi
done
}
test_ip_cleanup_env() {
ns_run "$HST_NS" ip link del $VETH_HOST
cleanup_all_ns
}
exit_error() {
echo "$1"
exit $ksft_fail
}
rnd() {
echo $(( RANDOM % 32 + 16 ))
}
test_ip_set_thread() {
# Here we are trying to create some IP conflicts between namespaces.
# If just add/remove IP, nothing interesting will happen.
# But if add random IP and then remove random IP,
# eventually conflicts start to apear.
ip link set ipvlan0 up
for ((i=0; i<IP_ITERATIONS; i++)); do
v=$(rnd)
ip a a "172.25.0.$v/24" dev ipvlan0 2>/dev/null
ip a a "fc00::$v/64" dev ipvlan0 2>/dev/null
v=$(rnd)
ip a d "172.25.0.$v/24" dev ipvlan0 2>/dev/null
ip a d "fc00::$v/64" dev ipvlan0 2>/dev/null
done
}
test_ip_set() {
RET=0
trap test_ip_cleanup_env EXIT
test_ip_setup_env
declare -A ns_pids
for ((i=0; i<NS_COUNT; i++)); do
ns="ipvlan_ns_$i"
ns_run ${!ns} timeout "$IPSET_TIMEOUT" \
bash -c "$0 test_ip_set_thread"&
ns_pids[$i]=$!
done
for ((i=0; i<NS_COUNT; i++)); do
wait "${ns_pids[$i]}"
done
declare -A all_ips
for ((i=0; i<NS_COUNT; i++)); do
ns="ipvlan_ns_$i"
ip_output=$(ip netns exec ${!ns} ip a l dev ipvlan0 | grep inet)
while IFS= read -r nsip_out; do
if [[ -z $nsip_out ]]; then
continue;
fi
nsip=$(awk '{print $2}' <<< "$nsip_out")
if [[ -v all_ips[$nsip] ]]; then
RET=$ksft_fail
log_test "conflict for $nsip"
return "$RET"
else
all_ips[$nsip]=$i
fi
done <<< "$ip_output"
done
if [ "$DEBUG" = "1" ]; then
for key in "${!all_ips[@]}"; do
echo "$key: ${all_ips[$key]}"
done
fi
trap - EXIT
test_ip_cleanup_env
log_test "test multithreaded ip set"
}
if [[ "$1" == "-d" ]]; then
DEBUG=1
shift
fi
if [[ "$1" == "-t" ]]; then
shift
TESTS="$*"
fi
if [[ "$1" == "test_ip_set_thread" ]]; then
test_ip_set_thread
else
require_command ip
tests_run
fi
|
