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 ip vrf exec $vrf_name \
34 ${PING} ${sip:+-I $sip} $dip -c 10 -i 0.1 -w 2 &> /dev/null
35 local t1=$(tc_rule_stats_get $dev $pref)
36 local delta=$((t1 - t0))
37 # Tolerate a couple stray extra packets.
38 ((expect <= delta && delta <= expect + 2))
39 check_err $? "Expected to capture $expect packets, got $delta."
40}
41
42do_test_span_dir_ips()
43{
44 local expect=$1; shift
45 local dev=$1; shift
46 local direction=$1; shift
47 local ip1=$1; shift
48 local ip2=$1; shift
49
50 icmp_capture_install $dev
51 mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
52 mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
53 icmp_capture_uninstall $dev
54}
55
56quick_test_span_dir_ips()
57{
58 do_test_span_dir_ips 10 "$@"
59}
60
61fail_test_span_dir_ips()
62{
63 do_test_span_dir_ips 0 "$@"
64}
65
66test_span_dir_ips()
67{
68 local dev=$1; shift
69 local direction=$1; shift
70 local forward_type=$1; shift
71 local backward_type=$1; shift
72 local ip1=$1; shift
73 local ip2=$1; shift
74
75 quick_test_span_dir_ips "$dev" "$direction" "$ip1" "$ip2"
76
77 icmp_capture_install $dev "type $forward_type"
78 mirror_test v$h1 $ip1 $ip2 $dev 100 10
79 icmp_capture_uninstall $dev
80
81 icmp_capture_install $dev "type $backward_type"
82 mirror_test v$h2 $ip2 $ip1 $dev 100 10
83 icmp_capture_uninstall $dev
84}
85
86fail_test_span_dir()
87{
88 fail_test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
89}
90
91test_span_dir()
92{
93 test_span_dir_ips "$@" 192.0.2.1 192.0.2.2
94}
95
96do_test_span_vlan_dir_ips()
97{
98 local expect=$1; shift
99 local dev=$1; shift
100 local vid=$1; shift
101 local direction=$1; shift
102 local ip1=$1; shift
103 local ip2=$1; shift
104
105 # Install the capture as skip_hw to avoid double-counting of packets.
106 # The traffic is meant for local box anyway, so will be trapped to
107 # kernel.
108 vlan_capture_install $dev "skip_hw vlan_id $vid vlan_ethtype ip"
109 mirror_test v$h1 $ip1 $ip2 $dev 100 $expect
110 mirror_test v$h2 $ip2 $ip1 $dev 100 $expect
111 vlan_capture_uninstall $dev
112}
113
114quick_test_span_vlan_dir_ips()
115{
116 do_test_span_vlan_dir_ips 10 "$@"
117}
118
119fail_test_span_vlan_dir_ips()
120{
121 do_test_span_vlan_dir_ips 0 "$@"
122}
123
124quick_test_span_vlan_dir()
125{
126 quick_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
127}
128
129fail_test_span_vlan_dir()
130{
131 fail_test_span_vlan_dir_ips "$@" 192.0.2.1 192.0.2.2
132}