1 #!/bin/bash
2 # SPDX-License-Identifier: GPL-2.0
3
4 ALL_TESTS="tunnel_key_nofrag_test"
5
6 NUM_NETIFS=4
7 source tc_common.sh
8 source lib.sh
9
10 tcflags="skip_hw"
11
12 h1_create()
13 {
14 simple_if_init $h1 192.0.2.1/24
15 forwarding_enable
16 mtu_set $h1 1500
17 tunnel_create h1-et vxlan 192.0.2.1 192.0.2.2 dev $h1 dstport 0 external
18 tc qdisc add dev h1-et clsact
19 mtu_set h1-et 1230
20 mtu_restore $h1
21 mtu_set $h1 1000
22 }
23
24 h1_destroy()
25 {
26 tc qdisc del dev h1-et clsact
27 tunnel_destroy h1-et
28 forwarding_restore
29 mtu_restore $h1
30 simple_if_fini $h1 192.0.2.1/24
31 }
32
33 h2_create()
34 {
35 simple_if_init $h2 192.0.2.2/24
36 }
37
38 h2_destroy()
39 {
40 simple_if_fini $h2 192.0.2.2/24
41 }
42
43 switch_create()
44 {
45 simple_if_init $swp1 192.0.2.2/24
46 tc qdisc add dev $swp1 clsact
47 simple_if_init $swp2 192.0.2.1/24
48 }
49
50 switch_destroy()
51 {
52 simple_if_fini $swp2 192.0.2.1/24
53 tc qdisc del dev $swp1 clsact
54 simple_if_fini $swp1 192.0.2.2/24
55 }
56
57 setup_prepare()
58 {
59 h1=${NETIFS[p1]}
60 swp1=${NETIFS[p2]}
61
62 swp2=${NETIFS[p3]}
63 h2=${NETIFS[p4]}
64
65 h1mac=$(mac_get $h1)
66 h2mac=$(mac_get $h2)
67
68 swp1origmac=$(mac_get $swp1)
69 swp2origmac=$(mac_get $swp2)
70 ip link set $swp1 address $h2mac
71 ip link set $swp2 address $h1mac
72
73 vrf_prepare
74
75 h1_create
76 h2_create
77 switch_create
78
79 if ! tc action add action tunnel_key help 2>&1 | grep -q nofrag; then
80 log_test "SKIP: iproute doesn't support nofrag"
81 exit $ksft_skip
82 fi
83 }
84
85 cleanup()
86 {
87 pre_cleanup
88
89 switch_destroy
90 h2_destroy
91 h1_destroy
92
93 vrf_cleanup
94
95 ip link set $swp2 address $swp2origmac
96 ip link set $swp1 address $swp1origmac
97 }
98
99 tunnel_key_nofrag_test()
100 {
101 RET=0
102 local i
103
104 tc filter add dev $swp1 ingress protocol ip pref 100 handle 100 \
105 flower src_ip 192.0.2.1 dst_ip 192.0.2.2 ip_proto udp \
106 ip_flags nofrag action drop
107 tc filter add dev $swp1 ingress protocol ip pref 101 handle 101 \
108 flower src_ip 192.0.2.1 dst_ip 192.0.2.2 ip_proto udp \
109 ip_flags firstfrag action drop
110 tc filter add dev $swp1 ingress protocol ip pref 102 handle 102 \
111 flower src_ip 192.0.2.1 dst_ip 192.0.2.2 ip_proto udp \
112 ip_flags nofirstfrag action drop
113
114 # test 'nofrag' set
115 tc filter add dev h1-et egress protocol all pref 1 handle 1 matchall $tcflags \
116 action tunnel_key set src_ip 192.0.2.1 dst_ip 192.0.2.2 id 42 nofrag index 10
117 $MZ h1-et -c 1 -p 930 -a 00:aa:bb:cc:dd:ee -b 00:ee:dd:cc:bb:aa -t ip -q
118 tc_check_packets "dev $swp1 ingress" 100 1
119 check_err $? "packet smaller than MTU was not tunneled"
120
121 $MZ h1-et -c 1 -p 931 -a 00:aa:bb:cc:dd:ee -b 00:ee:dd:cc:bb:aa -t ip -q
122 tc_check_packets "dev $swp1 ingress" 100 1
123 check_err $? "packet bigger than MTU matched nofrag (nofrag was set)"
124 tc_check_packets "dev $swp1 ingress" 101 0
125 check_err $? "packet bigger than MTU matched firstfrag (nofrag was set)"
126 tc_check_packets "dev $swp1 ingress" 102 0
127 check_err $? "packet bigger than MTU matched nofirstfrag (nofrag was set)"
128
129 # test 'nofrag' cleared
130 tc actions change action tunnel_key set src_ip 192.0.2.1 dst_ip 192.0.2.2 id 42 index 10
131 $MZ h1-et -c 1 -p 931 -a 00:aa:bb:cc:dd:ee -b 00:ee:dd:cc:bb:aa -t ip -q
132 tc_check_packets "dev $swp1 ingress" 100 1
133 check_err $? "packet bigger than MTU matched nofrag (nofrag was unset)"
134 tc_check_packets "dev $swp1 ingress" 101 1
135 check_err $? "packet bigger than MTU didn't match firstfrag (nofrag was unset) "
136 tc_check_packets "dev $swp1 ingress" 102 1
137 check_err $? "packet bigger than MTU didn't match nofirstfrag (nofrag was unset) "
138
139 for i in 100 101 102; do
140 tc filter del dev $swp1 ingress protocol ip pref $i handle $i flower
141 done
142 tc filter del dev h1-et egress pref 1 handle 1 matchall
143
144 log_test "tunnel_key nofrag ($tcflags)"
145 }
146
147 trap cleanup EXIT
148
149 setup_prepare
150 setup_wait
151
152 tests_run
153
154 tc_offload_check
155 if [[ $? -ne 0 ]]; then
156 log_info "Could not test offloaded functionality"
157 else
158 tcflags="skip_sw"
159 tests_run
160 fi
161
162 exit $EXIT_STATUS
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