Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
tjh.dev
kernel
os
linux
1# SPDX-License-Identifier: GPL-2.0
2
3mirror_install()
4{
5 local from_dev=$1; shift
6 local direction=$1; shift
7 local to_dev=$1; shift
8 local filter=$1; shift
9
10 tc filter add dev $from_dev $direction \
11 pref 1000 $filter \
12 action mirred egress mirror dev $to_dev
13}
14
15mirror_uninstall()
16{
17 local from_dev=$1; shift
18 local direction=$1; shift
19
20 tc filter del dev $swp1 $direction pref 1000
21}
22
23is_ipv6()
24{
25 local addr=$1; shift
26
27 [[ -z ${addr//[0-9a-fA-F:]/} ]]
28}
29
30mirror_test()
31{
32 local vrf_name=$1; shift
33 local sip=$1; shift
34 local dip=$1; shift
35 local dev=$1; shift
36 local pref=$1; shift
37 local expect=$1; shift
38
39 if is_ipv6 $dip; then
40 local proto=-6
41 local type="icmp6 type=128" # Echo request.
42 else
43 local proto=
44 local type="icmp echoreq"
45 fi
46
47 local t0=$(tc_rule_stats_get $dev $pref)
48 $MZ $proto $vrf_name ${sip:+-A $sip} -B $dip -a own -b bc -q \
49 -c 10 -d 100msec -t $type
50 sleep 0.5
51 local t1=$(tc_rule_stats_get $dev $pref)
52 local delta=$((t1 - t0))
53 # Tolerate a couple stray extra packets.
54 ((expect <= delta && delta <= expect + 2))
55 check_err $? "Expected to capture $expect packets, got $delta."
56}
57
58do_test_span_dir_ips()
59{
60 local expect=$1; shift
61 local dev=$1; shift
62 local direction=$1; shift
63 local ip1=$1; shift
64 local ip2=$1; shift
65
66 icmp_capture_install $dev
67 mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
68 mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
69 icmp_capture_uninstall $dev
70}
71
72quick_test_span_dir_ips()
73{
74 do_test_span_dir_ips 10 "$@"
75}
76
77fail_test_span_dir_ips()
78{
79 do_test_span_dir_ips 0 "$@"
80}
81
82test_span_dir_ips()
83{
84 local dev=$1; shift
85 local direction=$1; shift
86 local forward_type=$1; shift
87 local backward_type=$1; shift
88 local ip1=$1; shift
89 local ip2=$1; shift
90
91 quick_test_span_dir_ips "$dev" "$direction" "$ip1" "$ip2"
92
93 icmp_capture_install $dev "type $forward_type"
94 mirror_test v$h1 $ip1 $ip2 $dev 100 10
95 icmp_capture_uninstall $dev
96
97 icmp_capture_install $dev "type $backward_type"
98 mirror_test v$h2 $ip2 $ip1 $dev 100 10
99 icmp_capture_uninstall $dev
100}
101
102fail_test_span_dir()
103{
104 fail_test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
105}
106
107test_span_dir()
108{
109 test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
110}
111
112do_test_span_vlan_dir_ips()
113{
114 local expect=$1; shift
115 local dev=$1; shift
116 local vid=$1; shift
117 local direction=$1; shift
118 local ip1=$1; shift
119 local ip2=$1; shift
120
121 # Install the capture as skip_hw to avoid double-counting of packets.
122 # The traffic is meant for local box anyway, so will be trapped to
123 # kernel.
124 vlan_capture_install $dev "skip_hw vlan_id $vid vlan_ethtype ip"
125 mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
126 mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
127 vlan_capture_uninstall $dev
128}
129
130quick_test_span_vlan_dir_ips()
131{
132 do_test_span_vlan_dir_ips 10 "$@"
133}
134
135fail_test_span_vlan_dir_ips()
136{
137 do_test_span_vlan_dir_ips 0 "$@"
138}
139
140quick_test_span_vlan_dir()
141{
142 quick_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
143}
144
145fail_test_span_vlan_dir()
146{
147 fail_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
148}