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

   1 #!/bin/bash
   2 # SPDX-License-Identifier: GPL-2.0
   3
   4 # +--------------------+                     +----------------------+
   5 # | H1                 |                     |                   H2 |
   6 # |                    |                     |                      |
   7 # |              $h1 + |                     | + $h2                |
   8 # |     192.0.2.2/24 | |                     | | 198.51.100.2/24    |
   9 # | 2001:db8:1::2/64 | |                     | | 2001:db8:2::2/64   |
  10 # |                  | |                     | |                    |
  11 # +------------------|-+                     +-|--------------------+
  12 #                    |                         |
  13 # +------------------|-------------------------|--------------------+
  14 # | SW               |                         |                    |
  15 # |                  |                         |                    |
  16 # |             $rp1 +                         + $rp2               |
  17 # |     192.0.2.1/24                             198.51.100.1/24    |
  18 # | 2001:db8:1::1/64                             2001:db8:2::1/64   |
  19 # |                                                                 |
  20 # +-----------------------------------------------------------------+
  21
  22 ALL_TESTS="
  23         ping_ipv4
  24         ping_ipv6
  25         sip_in_class_e
  26         mc_mac_mismatch
  27         ipv4_sip_equal_dip
  28         ipv6_sip_equal_dip
  29         ipv4_dip_link_local
  30 "
  31
  32 NUM_NETIFS=4
  33 source lib.sh
  34 source tc_common.sh
  35
  36 require_command $MCD
  37 require_command $MC_CLI
  38 table_name=selftests
  39
  40 h1_create()
  41 {
  42         vrf_create "vrf-h1"
  43         ip link set dev $h1 master vrf-h1
  44
  45         ip link set dev vrf-h1 up
  46         ip link set dev $h1 up
  47
  48         ip address add 192.0.2.2/24 dev $h1
  49         ip address add 2001:db8:1::2/64 dev $h1
  50
  51         ip route add 198.51.100.0/24 vrf vrf-h1 nexthop via 192.0.2.1
  52         ip route add 2001:db8:2::/64 vrf vrf-h1 nexthop via 2001:db8:1::1
  53 }
  54
  55 h1_destroy()
  56 {
  57         ip route del 2001:db8:2::/64 vrf vrf-h1
  58         ip route del 198.51.100.0/24 vrf vrf-h1
  59
  60         ip address del 2001:db8:1::2/64 dev $h1
  61         ip address del 192.0.2.2/24 dev $h1
  62
  63         ip link set dev $h1 down
  64         vrf_destroy "vrf-h1"
  65 }
  66
  67 h2_create()
  68 {
  69         vrf_create "vrf-h2"
  70         ip link set dev $h2 master vrf-h2
  71
  72         ip link set dev vrf-h2 up
  73         ip link set dev $h2 up
  74
  75         ip address add 198.51.100.2/24 dev $h2
  76         ip address add 2001:db8:2::2/64 dev $h2
  77
  78         ip route add 192.0.2.0/24 vrf vrf-h2 nexthop via 198.51.100.1
  79         ip route add 2001:db8:1::/64 vrf vrf-h2 nexthop via 2001:db8:2::1
  80 }
  81
  82 h2_destroy()
  83 {
  84         ip route del 2001:db8:1::/64 vrf vrf-h2
  85         ip route del 192.0.2.0/24 vrf vrf-h2
  86
  87         ip address del 2001:db8:2::2/64 dev $h2
  88         ip address del 198.51.100.2/24 dev $h2
  89
  90         ip link set dev $h2 down
  91         vrf_destroy "vrf-h2"
  92 }
  93
  94 router_create()
  95 {
  96         ip link set dev $rp1 up
  97         ip link set dev $rp2 up
  98
  99         tc qdisc add dev $rp2 clsact
 100
 101         ip address add 192.0.2.1/24 dev $rp1
 102         ip address add 2001:db8:1::1/64 dev $rp1
 103
 104         ip address add 198.51.100.1/24 dev $rp2
 105         ip address add 2001:db8:2::1/64 dev $rp2
 106 }
 107
 108 router_destroy()
 109 {
 110         ip address del 2001:db8:2::1/64 dev $rp2
 111         ip address del 198.51.100.1/24 dev $rp2
 112
 113         ip address del 2001:db8:1::1/64 dev $rp1
 114         ip address del 192.0.2.1/24 dev $rp1
 115
 116         tc qdisc del dev $rp2 clsact
 117
 118         ip link set dev $rp2 down
 119         ip link set dev $rp1 down
 120 }
 121
 122 start_mcd()
 123 {
 124         SMCROUTEDIR="$(mktemp -d)"
 125
 126         for ((i = 1; i <= $NUM_NETIFS; ++i)); do
 127                 echo "phyint ${NETIFS[p$i]} enable" >> \
 128                         $SMCROUTEDIR/$table_name.conf
 129         done
 130
 131         $MCD -N -I $table_name -f $SMCROUTEDIR/$table_name.conf \
 132                 -P $SMCROUTEDIR/$table_name.pid
 133 }
 134
 135 kill_mcd()
 136 {
 137         pkill $MCD
 138         rm -rf $SMCROUTEDIR
 139 }
 140
 141 setup_prepare()
 142 {
 143         h1=${NETIFS[p1]}
 144         rp1=${NETIFS[p2]}
 145
 146         rp2=${NETIFS[p3]}
 147         h2=${NETIFS[p4]}
 148
 149         rp1mac=$(mac_get $rp1)
 150
 151         start_mcd
 152
 153         vrf_prepare
 154
 155         h1_create
 156         h2_create
 157
 158         router_create
 159
 160         forwarding_enable
 161 }
 162
 163 cleanup()
 164 {
 165         pre_cleanup
 166
 167         forwarding_restore
 168
 169         router_destroy
 170
 171         h2_destroy
 172         h1_destroy
 173
 174         vrf_cleanup
 175
 176         kill_mcd
 177 }
 178
 179 ping_ipv4()
 180 {
 181         ping_test $h1 198.51.100.2
 182 }
 183
 184 ping_ipv6()
 185 {
 186         ping6_test $h1 2001:db8:2::2
 187 }
 188
 189 sip_in_class_e()
 190 {
 191         RET=0
 192
 193         # Disable rpfilter to prevent packets to be dropped because of it.
 194         sysctl_set net.ipv4.conf.all.rp_filter 0
 195         sysctl_set net.ipv4.conf.$rp1.rp_filter 0
 196
 197         tc filter add dev $rp2 egress protocol ip pref 1 handle 101 \
 198                 flower src_ip 240.0.0.1 ip_proto udp action pass
 199
 200         $MZ $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec \
 201                 -A 240.0.0.1 -b $rp1mac -B 198.51.100.2 -q
 202
 203         tc_check_packets "dev $rp2 egress" 101 5
 204         check_err $? "Packets were dropped"
 205
 206         log_test "Source IP in class E"
 207
 208         tc filter del dev $rp2 egress protocol ip pref 1 handle 101 flower
 209         sysctl_restore net.ipv4.conf.$rp1.rp_filter
 210         sysctl_restore net.ipv4.conf.all.rp_filter
 211 }
 212
 213 create_mcast_sg()
 214 {
 215         local if_name=$1; shift
 216         local s_addr=$1; shift
 217         local mcast=$1; shift
 218         local dest_ifs=${@}
 219
 220         $MC_CLI -I $table_name add $if_name $s_addr $mcast $dest_ifs
 221 }
 222
 223 delete_mcast_sg()
 224 {
 225         local if_name=$1; shift
 226         local s_addr=$1; shift
 227         local mcast=$1; shift
 228         local dest_ifs=${@}
 229
 230         $MC_CLI -I $table_name remove $if_name $s_addr $mcast $dest_ifs
 231 }
 232
 233 __mc_mac_mismatch()
 234 {
 235         local desc=$1; shift
 236         local proto=$1; shift
 237         local sip=$1; shift
 238         local dip=$1; shift
 239         local flags=${1:-""}; shift
 240         local dmac=01:02:03:04:05:06
 241
 242         RET=0
 243
 244         tc filter add dev $rp2 egress protocol $proto pref 1 handle 101 \
 245                 flower dst_ip $dip action pass
 246
 247         create_mcast_sg $rp1 $sip $dip $rp2
 248
 249         $MZ $flags $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec -b $dmac \
 250                 -B $dip -q
 251
 252         tc_check_packets "dev $rp2 egress" 101 5
 253         check_err $? "Packets were dropped"
 254
 255         log_test "Multicast MAC mismatch: $desc"
 256
 257         delete_mcast_sg $rp1 $sip $dip $rp2
 258         tc filter del dev $rp2 egress protocol $proto pref 1 handle 101 flower
 259 }
 260
 261 mc_mac_mismatch()
 262 {
 263         __mc_mac_mismatch "IPv4" "ip" 192.0.2.2 225.1.2.3
 264         __mc_mac_mismatch "IPv6" "ipv6" 2001:db8:1::2 ff0e::3 "-6"
 265 }
 266
 267 ipv4_sip_equal_dip()
 268 {
 269         RET=0
 270
 271         # Disable rpfilter to prevent packets to be dropped because of it.
 272         sysctl_set net.ipv4.conf.all.rp_filter 0
 273         sysctl_set net.ipv4.conf.$rp1.rp_filter 0
 274
 275         tc filter add dev $rp2 egress protocol ip pref 1 handle 101 \
 276                 flower src_ip 198.51.100.2  action pass
 277
 278         $MZ $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec \
 279                 -A 198.51.100.2 -b $rp1mac -B 198.51.100.2 -q
 280
 281         tc_check_packets "dev $rp2 egress" 101 5
 282         check_err $? "Packets were dropped"
 283
 284         log_test "Source IP is equal to destination IP: IPv4"
 285
 286         tc filter del dev $rp2 egress protocol ip pref 1 handle 101 flower
 287         sysctl_restore net.ipv4.conf.$rp1.rp_filter
 288         sysctl_restore net.ipv4.conf.all.rp_filter
 289 }
 290
 291 ipv6_sip_equal_dip()
 292 {
 293         RET=0
 294
 295         tc filter add dev $rp2 egress protocol ipv6 pref 1 handle 101 \
 296                 flower src_ip 2001:db8:2::2 action pass
 297
 298         $MZ -6 $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec \
 299                 -A 2001:db8:2::2 -b $rp1mac -B 2001:db8:2::2 -q
 300
 301         tc_check_packets "dev $rp2 egress" 101 5
 302         check_err $? "Packets were dropped"
 303
 304         log_test "Source IP is equal to destination IP: IPv6"
 305
 306         tc filter del dev $rp2 egress protocol ipv6 pref 1 handle 101 flower
 307 }
 308
 309 ipv4_dip_link_local()
 310 {
 311         local dip=169.254.1.1
 312
 313         RET=0
 314
 315         tc filter add dev $rp2 egress protocol ip pref 1 handle 101 \
 316                 flower dst_ip $dip action pass
 317
 318         ip neigh add 169.254.1.1 lladdr 00:11:22:33:44:55 dev $rp2
 319         ip route add 169.254.1.0/24 dev $rp2
 320
 321         $MZ $h1 -t udp "sp=54321,dp=12345" -c 5 -d 1msec -b $rp1mac -B $dip -q
 322
 323         tc_check_packets "dev $rp2 egress" 101 5
 324         check_err $? "Packets were dropped"
 325
 326         log_test "IPv4 destination IP is link-local"
 327
 328         ip route del 169.254.1.0/24 dev $rp2
 329         ip neigh del 169.254.1.1 lladdr 00:11:22:33:44:55 dev $rp2
 330         tc filter del dev $rp2 egress protocol ip pref 1 handle 101 flower
 331 }
 332
 333 trap cleanup EXIT
 334
 335 setup_prepare
 336 setup_wait
 337
 338 tests_run
 339
 340 exit $EXIT_STATUS