tools/testing/selftests/net/forwarding/tc_tunnel_key.sh

   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