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