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Commit | Line | Data |
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90e02896 MKL |
1 | #!/bin/bash |
2 | ||
3 | [[ -z $TC ]] && TC='tc' | |
4 | [[ -z $IP ]] && IP='ip' | |
5 | ||
6 | REDIRECT_USER='./tc_l2_redirect' | |
7 | REDIRECT_BPF='./tc_l2_redirect_kern.o' | |
8 | ||
9 | RP_FILTER=$(< /proc/sys/net/ipv4/conf/all/rp_filter) | |
10 | IPV6_FORWARDING=$(< /proc/sys/net/ipv6/conf/all/forwarding) | |
11 | ||
12 | function config_common { | |
13 | local tun_type=$1 | |
14 | ||
15 | $IP netns add ns1 | |
16 | $IP netns add ns2 | |
17 | $IP link add ve1 type veth peer name vens1 | |
18 | $IP link add ve2 type veth peer name vens2 | |
19 | $IP link set dev ve1 up | |
20 | $IP link set dev ve2 up | |
21 | $IP link set dev ve1 mtu 1500 | |
22 | $IP link set dev ve2 mtu 1500 | |
23 | $IP link set dev vens1 netns ns1 | |
24 | $IP link set dev vens2 netns ns2 | |
25 | ||
26 | $IP -n ns1 link set dev lo up | |
27 | $IP -n ns1 link set dev vens1 up | |
28 | $IP -n ns1 addr add 10.1.1.101/24 dev vens1 | |
29 | $IP -n ns1 addr add 2401:db01::65/64 dev vens1 nodad | |
30 | $IP -n ns1 route add default via 10.1.1.1 dev vens1 | |
31 | $IP -n ns1 route add default via 2401:db01::1 dev vens1 | |
32 | ||
33 | $IP -n ns2 link set dev lo up | |
34 | $IP -n ns2 link set dev vens2 up | |
35 | $IP -n ns2 addr add 10.2.1.102/24 dev vens2 | |
36 | $IP -n ns2 addr add 2401:db02::66/64 dev vens2 nodad | |
37 | $IP -n ns2 addr add 10.10.1.102 dev lo | |
38 | $IP -n ns2 addr add 2401:face::66/64 dev lo nodad | |
39 | $IP -n ns2 link add ipt2 type ipip local 10.2.1.102 remote 10.2.1.1 | |
40 | $IP -n ns2 link add ip6t2 type ip6tnl mode any local 2401:db02::66 remote 2401:db02::1 | |
41 | $IP -n ns2 link set dev ipt2 up | |
42 | $IP -n ns2 link set dev ip6t2 up | |
43 | $IP netns exec ns2 $TC qdisc add dev vens2 clsact | |
44 | $IP netns exec ns2 $TC filter add dev vens2 ingress bpf da obj $REDIRECT_BPF sec drop_non_tun_vip | |
45 | if [[ $tun_type == "ipip" ]]; then | |
46 | $IP -n ns2 route add 10.1.1.0/24 dev ipt2 | |
47 | $IP netns exec ns2 sysctl -q -w net.ipv4.conf.all.rp_filter=0 | |
48 | $IP netns exec ns2 sysctl -q -w net.ipv4.conf.ipt2.rp_filter=0 | |
49 | else | |
50 | $IP -n ns2 route add 10.1.1.0/24 dev ip6t2 | |
51 | $IP -n ns2 route add 2401:db01::/64 dev ip6t2 | |
52 | $IP netns exec ns2 sysctl -q -w net.ipv4.conf.all.rp_filter=0 | |
53 | $IP netns exec ns2 sysctl -q -w net.ipv4.conf.ip6t2.rp_filter=0 | |
54 | fi | |
55 | ||
56 | $IP addr add 10.1.1.1/24 dev ve1 | |
57 | $IP addr add 2401:db01::1/64 dev ve1 nodad | |
58 | $IP addr add 10.2.1.1/24 dev ve2 | |
59 | $IP addr add 2401:db02::1/64 dev ve2 nodad | |
60 | ||
61 | $TC qdisc add dev ve2 clsact | |
62 | $TC filter add dev ve2 ingress bpf da obj $REDIRECT_BPF sec l2_to_iptun_ingress_forward | |
63 | ||
64 | sysctl -q -w net.ipv4.conf.all.rp_filter=0 | |
65 | sysctl -q -w net.ipv6.conf.all.forwarding=1 | |
66 | } | |
67 | ||
68 | function cleanup { | |
69 | set +e | |
70 | [[ -z $DEBUG ]] || set +x | |
71 | $IP netns delete ns1 >& /dev/null | |
72 | $IP netns delete ns2 >& /dev/null | |
73 | $IP link del ve1 >& /dev/null | |
74 | $IP link del ve2 >& /dev/null | |
75 | $IP link del ipt >& /dev/null | |
76 | $IP link del ip6t >& /dev/null | |
77 | sysctl -q -w net.ipv4.conf.all.rp_filter=$RP_FILTER | |
78 | sysctl -q -w net.ipv6.conf.all.forwarding=$IPV6_FORWARDING | |
79 | rm -f /sys/fs/bpf/tc/globals/tun_iface | |
80 | [[ -z $DEBUG ]] || set -x | |
81 | set -e | |
82 | } | |
83 | ||
84 | function l2_to_ipip { | |
85 | echo -n "l2_to_ipip $1: " | |
86 | ||
87 | local dir=$1 | |
88 | ||
89 | config_common ipip | |
90 | ||
91 | $IP link add ipt type ipip external | |
92 | $IP link set dev ipt up | |
93 | sysctl -q -w net.ipv4.conf.ipt.rp_filter=0 | |
94 | sysctl -q -w net.ipv4.conf.ipt.forwarding=1 | |
95 | ||
96 | if [[ $dir == "egress" ]]; then | |
97 | $IP route add 10.10.1.0/24 via 10.2.1.102 dev ve2 | |
98 | $TC filter add dev ve2 egress bpf da obj $REDIRECT_BPF sec l2_to_iptun_ingress_redirect | |
99 | sysctl -q -w net.ipv4.conf.ve1.forwarding=1 | |
100 | else | |
101 | $TC qdisc add dev ve1 clsact | |
102 | $TC filter add dev ve1 ingress bpf da obj $REDIRECT_BPF sec l2_to_iptun_ingress_redirect | |
103 | fi | |
104 | ||
105 | $REDIRECT_USER -U /sys/fs/bpf/tc/globals/tun_iface -i $(< /sys/class/net/ipt/ifindex) | |
106 | ||
107 | $IP netns exec ns1 ping -c1 10.10.1.102 >& /dev/null | |
108 | ||
109 | if [[ $dir == "egress" ]]; then | |
110 | # test direct egress to ve2 (i.e. not forwarding from | |
111 | # ve1 to ve2). | |
112 | ping -c1 10.10.1.102 >& /dev/null | |
113 | fi | |
114 | ||
115 | cleanup | |
116 | ||
117 | echo "OK" | |
118 | } | |
119 | ||
120 | function l2_to_ip6tnl { | |
121 | echo -n "l2_to_ip6tnl $1: " | |
122 | ||
123 | local dir=$1 | |
124 | ||
125 | config_common ip6tnl | |
126 | ||
127 | $IP link add ip6t type ip6tnl mode any external | |
128 | $IP link set dev ip6t up | |
129 | sysctl -q -w net.ipv4.conf.ip6t.rp_filter=0 | |
130 | sysctl -q -w net.ipv4.conf.ip6t.forwarding=1 | |
131 | ||
132 | if [[ $dir == "egress" ]]; then | |
133 | $IP route add 10.10.1.0/24 via 10.2.1.102 dev ve2 | |
134 | $IP route add 2401:face::/64 via 2401:db02::66 dev ve2 | |
135 | $TC filter add dev ve2 egress bpf da obj $REDIRECT_BPF sec l2_to_ip6tun_ingress_redirect | |
136 | sysctl -q -w net.ipv4.conf.ve1.forwarding=1 | |
137 | else | |
138 | $TC qdisc add dev ve1 clsact | |
139 | $TC filter add dev ve1 ingress bpf da obj $REDIRECT_BPF sec l2_to_ip6tun_ingress_redirect | |
140 | fi | |
141 | ||
142 | $REDIRECT_USER -U /sys/fs/bpf/tc/globals/tun_iface -i $(< /sys/class/net/ip6t/ifindex) | |
143 | ||
144 | $IP netns exec ns1 ping -c1 10.10.1.102 >& /dev/null | |
145 | $IP netns exec ns1 ping -6 -c1 2401:face::66 >& /dev/null | |
146 | ||
147 | if [[ $dir == "egress" ]]; then | |
148 | # test direct egress to ve2 (i.e. not forwarding from | |
149 | # ve1 to ve2). | |
150 | ping -c1 10.10.1.102 >& /dev/null | |
151 | ping -6 -c1 2401:face::66 >& /dev/null | |
152 | fi | |
153 | ||
154 | cleanup | |
155 | ||
156 | echo "OK" | |
157 | } | |
158 | ||
159 | cleanup | |
160 | test_names="l2_to_ipip l2_to_ip6tnl" | |
161 | test_dirs="ingress egress" | |
162 | if [[ $# -ge 2 ]]; then | |
163 | test_names=$1 | |
164 | test_dirs=$2 | |
165 | elif [[ $# -ge 1 ]]; then | |
166 | test_names=$1 | |
167 | fi | |
168 | ||
169 | for t in $test_names; do | |
170 | for d in $test_dirs; do | |
171 | $t $d | |
172 | done | |
173 | done |