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
23mirror_test()
24{
25 local vrf_name=$1; shift
26 local sip=$1; shift
27 local dip=$1; shift
28 local dev=$1; shift
29 local pref=$1; shift
30 local expect=$1; shift
31
32 local t0=$(tc_rule_stats_get $dev $pref)
33 $MZ $vrf_name ${sip:+-A $sip} -B $dip -a own -b bc -q \
34 -c 10 -d 100ms -t icmp type=8
35 sleep 0.5
36 local t1=$(tc_rule_stats_get $dev $pref)
37 local delta=$((t1 - t0))
38 # Tolerate a couple stray extra packets.
39 ((expect <= delta && delta <= expect + 2))
40 check_err $? "Expected to capture $expect packets, got $delta."
41}
42
43do_test_span_dir_ips()
44{
45 local expect=$1; shift
46 local dev=$1; shift
47 local direction=$1; shift
48 local ip1=$1; shift
49 local ip2=$1; shift
50
51 icmp_capture_install $dev
52 mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
53 mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
54 icmp_capture_uninstall $dev
55}
56
57quick_test_span_dir_ips()
58{
59 do_test_span_dir_ips 10 "$@"
60}
61
62fail_test_span_dir_ips()
63{
64 do_test_span_dir_ips 0 "$@"
65}
66
67test_span_dir_ips()
68{
69 local dev=$1; shift
70 local direction=$1; shift
71 local forward_type=$1; shift
72 local backward_type=$1; shift
73 local ip1=$1; shift
74 local ip2=$1; shift
75
76 quick_test_span_dir_ips "$dev" "$direction" "$ip1" "$ip2"
77
78 icmp_capture_install $dev "type $forward_type"
79 mirror_test v$h1 $ip1 $ip2 $dev 100 10
80 icmp_capture_uninstall $dev
81
82 icmp_capture_install $dev "type $backward_type"
83 mirror_test v$h2 $ip2 $ip1 $dev 100 10
84 icmp_capture_uninstall $dev
85}
86
87fail_test_span_dir()
88{
89 fail_test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
90}
91
92test_span_dir()
93{
94 test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
95}
96
97do_test_span_vlan_dir_ips()
98{
99 local expect=$1; shift
100 local dev=$1; shift
101 local vid=$1; shift
102 local direction=$1; shift
103 local ip1=$1; shift
104 local ip2=$1; shift
105
106 # Install the capture as skip_hw to avoid double-counting of packets.
107 # The traffic is meant for local box anyway, so will be trapped to
108 # kernel.
109 vlan_capture_install $dev "skip_hw vlan_id $vid vlan_ethtype ip"
110 mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
111 mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
112 vlan_capture_uninstall $dev
113}
114
115quick_test_span_vlan_dir_ips()
116{
117 do_test_span_vlan_dir_ips 10 "$@"
118}
119
120fail_test_span_vlan_dir_ips()
121{
122 do_test_span_vlan_dir_ips 0 "$@"
123}
124
125quick_test_span_vlan_dir()
126{
127 quick_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
128}
129
130fail_test_span_vlan_dir()
131{
132 fail_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
133}