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 if [[ -z ${expect//[[:digit:]]/} ]]; then
48 expect="== $expect"
49 fi
50
51 local t0=$(tc_rule_stats_get $dev $pref)
52 $MZ $proto $vrf_name ${sip:+-A $sip} -B $dip -a own -b bc -q \
53 -c 10 -d 100msec -t $type
54 sleep 0.5
55 local t1=$(tc_rule_stats_get $dev $pref)
56 local delta=$((t1 - t0))
57 ((delta $expect))
58 check_err $? "Expected to capture $expect packets, got $delta."
59}
60
61do_test_span_dir_ips()
62{
63 local expect=$1; shift
64 local dev=$1; shift
65 local ip1=$1; shift
66 local ip2=$1; shift
67 local forward_type=${1-8}; shift
68 local backward_type=${1-0}; shift
69
70 icmp_capture_install $dev "type $forward_type"
71 mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
72 icmp_capture_uninstall $dev
73
74 icmp_capture_install $dev "type $backward_type"
75 mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
76 icmp_capture_uninstall $dev
77}
78
79quick_test_span_dir_ips()
80{
81 local dev=$1; shift
82 local ip1=$1; shift
83 local ip2=$1; shift
84 local forward_type=${1-8}; shift
85 local backward_type=${1-0}; shift
86
87 do_test_span_dir_ips 10 "$dev" "$ip1" "$ip2" \
88 "$forward_type" "$backward_type"
89}
90
91test_span_dir_ips()
92{
93 local dev=$1; shift
94 local forward_type=$1; shift
95 local backward_type=$1; shift
96 local ip1=$1; shift
97 local ip2=$1; shift
98
99 quick_test_span_dir_ips "$dev" "$ip1" "$ip2" \
100 "$forward_type" "$backward_type"
101
102 icmp_capture_install $dev "type $forward_type"
103 mirror_test v$h1 $ip1 $ip2 $dev 100 10
104 icmp_capture_uninstall $dev
105
106 icmp_capture_install $dev "type $backward_type"
107 mirror_test v$h2 $ip2 $ip1 $dev 100 10
108 icmp_capture_uninstall $dev
109}
110
111test_span_dir()
112{
113 local dev=$1; shift
114 local forward_type=$1; shift
115 local backward_type=$1; shift
116
117 test_span_dir_ips "$dev" "$forward_type" "$backward_type" \
118 192.0.2.1 192.0.2.2
119}
120
121do_test_span_vlan_dir_ips()
122{
123 local expect=$1; shift
124 local dev=$1; shift
125 local vid=$1; shift
126 local ul_proto=$1; shift
127 local ip1=$1; shift
128 local ip2=$1; shift
129
130 # Install the capture as skip_hw to avoid double-counting of packets.
131 # The traffic is meant for local box anyway, so will be trapped to
132 # kernel.
133 vlan_capture_install $dev "skip_hw vlan_id $vid vlan_ethtype $ul_proto"
134 mirror_test v$h1 $ip1 $ip2 $dev 100 "$expect"
135 mirror_test v$h2 $ip2 $ip1 $dev 100 "$expect"
136 vlan_capture_uninstall $dev
137}
138
139quick_test_span_vlan_dir_ips()
140{
141 local dev=$1; shift
142 local vid=$1; shift
143 local ul_proto=$1; shift
144 local ip1=$1; shift
145 local ip2=$1; shift
146
147 do_test_span_vlan_dir_ips '>= 10' "$dev" "$vid" "$ul_proto" \
148 "$ip1" "$ip2"
149}
150
151fail_test_span_vlan_dir_ips()
152{
153 local dev=$1; shift
154 local vid=$1; shift
155 local ul_proto=$1; shift
156 local ip1=$1; shift
157 local ip2=$1; shift
158
159 do_test_span_vlan_dir_ips 0 "$dev" "$vid" "$ul_proto" "$ip1" "$ip2"
160}
161
162quick_test_span_vlan_dir()
163{
164 local dev=$1; shift
165 local vid=$1; shift
166 local ul_proto=$1; shift
167
168 quick_test_span_vlan_dir_ips "$dev" "$vid" "$ul_proto" \
169 192.0.2.1 192.0.2.2
170}
171
172fail_test_span_vlan_dir()
173{
174 local dev=$1; shift
175 local vid=$1; shift
176 local ul_proto=$1; shift
177
178 fail_test_span_vlan_dir_ips "$dev" "$vid" "$ul_proto" \
179 192.0.2.1 192.0.2.2
180}