1#!/bin/bash 2# SPDX-License-Identifier: GPL-2.0 3 4# This test is for checking IPv4 and IPv6 FIB rules API 5 6source lib.sh 7ret=0 8PAUSE_ON_FAIL=${PAUSE_ON_FAIL:=no} 9 10RTABLE=100 11RTABLE_PEER=101 12RTABLE_VRF=102 13GW_IP4=192.51.100.2 14SRC_IP=192.51.100.3 15GW_IP6=2001:db8:1::2 16SRC_IP6=2001:db8:1::3 17 18DEV_ADDR=192.51.100.1 19DEV_ADDR6=2001:db8:1::1 20DEV=dummy0 21TESTS=" 22 fib_rule6 23 fib_rule4 24 fib_rule6_connect 25 fib_rule4_connect 26 fib_rule6_vrf 27 fib_rule4_vrf 28" 29 30SELFTEST_PATH="" 31 32log_test() 33{ 34 local rc=$1 35 local expected=$2 36 local msg="$3" 37 38 if [ ${rc} -eq ${expected} ]; then 39 nsuccess=$((nsuccess+1)) 40 printf " TEST: %-60s [ OK ]\n" "${msg}" 41 else 42 ret=1 43 nfail=$((nfail+1)) 44 printf " TEST: %-60s [FAIL]\n" "${msg}" 45 if [ "${PAUSE_ON_FAIL}" = "yes" ]; then 46 echo 47 echo "hit enter to continue, 'q' to quit" 48 read a 49 [ "$a" = "q" ] && exit 1 50 fi 51 fi 52} 53 54setup() 55{ 56 set -e 57 setup_ns testns 58 IP="ip -netns $testns" 59 60 $IP link add dummy0 type dummy 61 $IP link set dev dummy0 up 62 $IP address add $DEV_ADDR/24 dev dummy0 63 $IP -6 address add $DEV_ADDR6/64 dev dummy0 64 65 set +e 66} 67 68cleanup() 69{ 70 $IP link del dev dummy0 &> /dev/null 71 cleanup_ns $testns 72} 73 74setup_peer() 75{ 76 set -e 77 78 setup_ns peerns 79 IP_PEER="ip -netns $peerns" 80 $IP_PEER link set dev lo up 81 82 ip link add name veth0 netns $testns type veth \ 83 peer name veth1 netns $peerns 84 $IP link set dev veth0 up 85 $IP_PEER link set dev veth1 up 86 87 $IP address add 192.0.2.10 peer 192.0.2.11/32 dev veth0 88 $IP_PEER address add 192.0.2.11 peer 192.0.2.10/32 dev veth1 89 90 $IP address add 2001:db8::10 peer 2001:db8::11/128 dev veth0 nodad 91 $IP_PEER address add 2001:db8::11 peer 2001:db8::10/128 dev veth1 nodad 92 93 $IP_PEER address add 198.51.100.11/32 dev lo 94 $IP route add table $RTABLE_PEER 198.51.100.11/32 via 192.0.2.11 95 96 $IP_PEER address add 2001:db8::1:11/128 dev lo 97 $IP route add table $RTABLE_PEER 2001:db8::1:11/128 via 2001:db8::11 98 99 set +e 100} 101 102cleanup_peer() 103{ 104 $IP link del dev veth0 105 ip netns del $peerns 106} 107 108setup_vrf() 109{ 110 $IP link add name vrf0 up type vrf table $RTABLE_VRF 111 $IP link set dev $DEV master vrf0 112} 113 114cleanup_vrf() 115{ 116 $IP link del dev vrf0 117} 118 119fib_check_iproute_support() 120{ 121 ip rule help 2>&1 | grep -q $1 122 if [ $? -ne 0 ]; then 123 echo "SKIP: iproute2 iprule too old, missing $1 match" 124 return 1 125 fi 126 127 ip route get help 2>&1 | grep -q $2 128 if [ $? -ne 0 ]; then 129 echo "SKIP: iproute2 get route too old, missing $2 match" 130 return 1 131 fi 132 133 return 0 134} 135 136fib_rule6_del() 137{ 138 $IP -6 rule del $1 139 log_test $? 0 "rule6 del $1" 140} 141 142fib_rule6_del_by_pref() 143{ 144 pref=$($IP -6 rule show $1 table $RTABLE | cut -d ":" -f 1) 145 $IP -6 rule del pref $pref 146} 147 148fib_rule6_test_match_n_redirect() 149{ 150 local match="$1" 151 local getmatch="$2" 152 local getnomatch="$3" 153 local description="$4" 154 local nomatch_description="$5" 155 156 $IP -6 rule add $match table $RTABLE 157 $IP -6 route get $GW_IP6 $getmatch | grep -q "table $RTABLE" 158 log_test $? 0 "rule6 check: $description" 159 160 $IP -6 route get $GW_IP6 $getnomatch 2>&1 | grep -q "table $RTABLE" 161 log_test $? 1 "rule6 check: $nomatch_description" 162 163 fib_rule6_del_by_pref "$match" 164 log_test $? 0 "rule6 del by pref: $description" 165} 166 167fib_rule6_test_reject() 168{ 169 local match="$1" 170 local rc 171 172 $IP -6 rule add $match table $RTABLE 2>/dev/null 173 rc=$? 174 log_test $rc 2 "rule6 check: $match" 175 176 if [ $rc -eq 0 ]; then 177 $IP -6 rule del $match table $RTABLE 178 fi 179} 180 181fib_rule6_test() 182{ 183 local ext_name=$1; shift 184 local getnomatch 185 local getmatch 186 local match 187 local cnt 188 189 echo 190 echo "IPv6 FIB rule tests $ext_name" 191 192 # setup the fib rule redirect route 193 $IP -6 route add table $RTABLE default via $GW_IP6 dev $DEV onlink 194 195 match="oif $DEV" 196 getnomatch="oif lo" 197 fib_rule6_test_match_n_redirect "$match" "$match" "$getnomatch" \ 198 "oif redirect to table" "oif no redirect to table" 199 200 match="from $SRC_IP6 iif $DEV" 201 getnomatch="from $SRC_IP6 iif lo" 202 fib_rule6_test_match_n_redirect "$match" "$match" "$getnomatch" \ 203 "iif redirect to table" "iif no redirect to table" 204 205 # Reject dsfield (tos) options which have ECN bits set 206 for cnt in $(seq 1 3); do 207 match="dsfield $cnt" 208 fib_rule6_test_reject "$match" 209 done 210 211 # Don't take ECN bits into account when matching on dsfield 212 match="tos 0x10" 213 for cnt in "0x10" "0x11" "0x12" "0x13"; do 214 # Using option 'tos' instead of 'dsfield' as old iproute2 215 # versions don't support 'dsfield' in ip rule show. 216 getmatch="tos $cnt" 217 getnomatch="tos 0x20" 218 fib_rule6_test_match_n_redirect "$match" "$getmatch" \ 219 "$getnomatch" "$getmatch redirect to table" \ 220 "$getnomatch no redirect to table" 221 done 222 223 # Re-test TOS matching, but with input routes since they are handled 224 # differently from output routes. 225 match="tos 0x10" 226 for cnt in "0x10" "0x11" "0x12" "0x13"; do 227 getmatch="tos $cnt" 228 getnomatch="tos 0x20" 229 fib_rule6_test_match_n_redirect "$match" \ 230 "from $SRC_IP6 iif $DEV $getmatch" \ 231 "from $SRC_IP6 iif $DEV $getnomatch" \ 232 "iif $getmatch redirect to table" \ 233 "iif $getnomatch no redirect to table" 234 done 235 236 match="fwmark 0x64" 237 getmatch="mark 0x64" 238 getnomatch="mark 0x63" 239 fib_rule6_test_match_n_redirect "$match" "$getmatch" "$getnomatch" \ 240 "fwmark redirect to table" "fwmark no redirect to table" 241 242 fib_check_iproute_support "uidrange" "uid" 243 if [ $? -eq 0 ]; then 244 match="uidrange 100-100" 245 getmatch="uid 100" 246 getnomatch="uid 101" 247 fib_rule6_test_match_n_redirect "$match" "$getmatch" \ 248 "$getnomatch" "uid redirect to table" \ 249 "uid no redirect to table" 250 fi 251 252 fib_check_iproute_support "sport" "sport" 253 if [ $? -eq 0 ]; then 254 match="sport 666 dport 777" 255 getnomatch="sport 667 dport 778" 256 fib_rule6_test_match_n_redirect "$match" "$match" \ 257 "$getnomatch" "sport and dport redirect to table" \ 258 "sport and dport no redirect to table" 259 fi 260 261 fib_check_iproute_support "ipproto" "ipproto" 262 if [ $? -eq 0 ]; then 263 match="ipproto tcp" 264 getnomatch="ipproto udp" 265 fib_rule6_test_match_n_redirect "$match" "$match" \ 266 "$getnomatch" "ipproto tcp match" "ipproto udp no match" 267 fi 268 269 fib_check_iproute_support "ipproto" "ipproto" 270 if [ $? -eq 0 ]; then 271 match="ipproto ipv6-icmp" 272 getnomatch="ipproto tcp" 273 fib_rule6_test_match_n_redirect "$match" "$match" \ 274 "$getnomatch" "ipproto ipv6-icmp match" \ 275 "ipproto ipv6-tcp no match" 276 fi 277} 278 279fib_rule6_vrf_test() 280{ 281 setup_vrf 282 fib_rule6_test "- with VRF" 283 cleanup_vrf 284} 285 286# Verify that the IPV6_TCLASS option of UDPv6 and TCPv6 sockets is properly 287# taken into account when connecting the socket and when sending packets. 288fib_rule6_connect_test() 289{ 290 local dsfield 291 292 echo 293 echo "IPv6 FIB rule connect tests" 294 295 setup_peer 296 $IP -6 rule add dsfield 0x04 table $RTABLE_PEER 297 298 # Combine the base DS Field value (0x04) with all possible ECN values 299 # (Not-ECT: 0, ECT(1): 1, ECT(0): 2, CE: 3). 300 # The ECN bits shouldn't influence the result of the test. 301 for dsfield in 0x04 0x05 0x06 0x07; do 302 nettest -q -6 -B -t 5 -N $testns -O $peerns -U -D \ 303 -Q "${dsfield}" -l 2001:db8::1:11 -r 2001:db8::1:11 304 log_test $? 0 "rule6 dsfield udp connect (dsfield ${dsfield})" 305 306 nettest -q -6 -B -t 5 -N $testns -O $peerns -Q "${dsfield}" \ 307 -l 2001:db8::1:11 -r 2001:db8::1:11 308 log_test $? 0 "rule6 dsfield tcp connect (dsfield ${dsfield})" 309 done 310 311 # Check that UDP and TCP connections fail when using a DS Field that 312 # does not match the previously configured FIB rule. 313 nettest -q -6 -B -t 5 -N $testns -O $peerns -U -D \ 314 -Q 0x20 -l 2001:db8::1:11 -r 2001:db8::1:11 315 log_test $? 1 "rule6 dsfield udp no connect (dsfield 0x20)" 316 317 nettest -q -6 -B -t 5 -N $testns -O $peerns -Q 0x20 \ 318 -l 2001:db8::1:11 -r 2001:db8::1:11 319 log_test $? 1 "rule6 dsfield tcp no connect (dsfield 0x20)" 320 321 $IP -6 rule del dsfield 0x04 table $RTABLE_PEER 322 cleanup_peer 323} 324 325fib_rule4_del() 326{ 327 $IP rule del $1 328 log_test $? 0 "del $1" 329} 330 331fib_rule4_del_by_pref() 332{ 333 pref=$($IP rule show $1 table $RTABLE | cut -d ":" -f 1) 334 $IP rule del pref $pref 335} 336 337fib_rule4_test_match_n_redirect() 338{ 339 local match="$1" 340 local getmatch="$2" 341 local getnomatch="$3" 342 local description="$4" 343 local nomatch_description="$5" 344 345 $IP rule add $match table $RTABLE 346 $IP route get $GW_IP4 $getmatch | grep -q "table $RTABLE" 347 log_test $? 0 "rule4 check: $description" 348 349 $IP route get $GW_IP4 $getnomatch 2>&1 | grep -q "table $RTABLE" 350 log_test $? 1 "rule4 check: $nomatch_description" 351 352 fib_rule4_del_by_pref "$match" 353 log_test $? 0 "rule4 del by pref: $description" 354} 355 356fib_rule4_test_reject() 357{ 358 local match="$1" 359 local rc 360 361 $IP rule add $match table $RTABLE 2>/dev/null 362 rc=$? 363 log_test $rc 2 "rule4 check: $match" 364 365 if [ $rc -eq 0 ]; then 366 $IP rule del $match table $RTABLE 367 fi 368} 369 370fib_rule4_test() 371{ 372 local ext_name=$1; shift 373 local getnomatch 374 local getmatch 375 local match 376 local cnt 377 378 echo 379 echo "IPv4 FIB rule tests $ext_name" 380 381 # setup the fib rule redirect route 382 $IP route add table $RTABLE default via $GW_IP4 dev $DEV onlink 383 384 match="oif $DEV" 385 getnomatch="oif lo" 386 fib_rule4_test_match_n_redirect "$match" "$match" "$getnomatch" \ 387 "oif redirect to table" "oif no redirect to table" 388 389 # Enable forwarding and disable rp_filter as all the addresses are in 390 # the same subnet and egress device == ingress device. 391 ip netns exec $testns sysctl -qw net.ipv4.ip_forward=1 392 ip netns exec $testns sysctl -qw net.ipv4.conf.$DEV.rp_filter=0 393 match="from $SRC_IP iif $DEV" 394 getnomatch="from $SRC_IP iif lo" 395 fib_rule4_test_match_n_redirect "$match" "$match" "$getnomatch" \ 396 "iif redirect to table" "iif no redirect to table" 397 398 # Reject dsfield (tos) options which have ECN bits set 399 for cnt in $(seq 1 3); do 400 match="dsfield $cnt" 401 fib_rule4_test_reject "$match" 402 done 403 404 # Don't take ECN bits into account when matching on dsfield 405 match="tos 0x10" 406 for cnt in "0x10" "0x11" "0x12" "0x13"; do 407 # Using option 'tos' instead of 'dsfield' as old iproute2 408 # versions don't support 'dsfield' in ip rule show. 409 getmatch="tos $cnt" 410 getnomatch="tos 0x20" 411 fib_rule4_test_match_n_redirect "$match" "$getmatch" \ 412 "$getnomatch" "$getmatch redirect to table" \ 413 "$getnomatch no redirect to table" 414 done 415 416 # Re-test TOS matching, but with input routes since they are handled 417 # differently from output routes. 418 match="tos 0x10" 419 for cnt in "0x10" "0x11" "0x12" "0x13"; do 420 getmatch="tos $cnt" 421 getnomatch="tos 0x20" 422 fib_rule4_test_match_n_redirect "$match" \ 423 "from $SRC_IP iif $DEV $getmatch" \ 424 "from $SRC_IP iif $DEV $getnomatch" \ 425 "iif $getmatch redirect to table" \ 426 "iif $getnomatch no redirect to table" 427 done 428 429 match="fwmark 0x64" 430 getmatch="mark 0x64" 431 getnomatch="mark 0x63" 432 fib_rule4_test_match_n_redirect "$match" "$getmatch" "$getnomatch" \ 433 "fwmark redirect to table" "fwmark no redirect to table" 434 435 fib_check_iproute_support "uidrange" "uid" 436 if [ $? -eq 0 ]; then 437 match="uidrange 100-100" 438 getmatch="uid 100" 439 getnomatch="uid 101" 440 fib_rule4_test_match_n_redirect "$match" "$getmatch" \ 441 "$getnomatch" "uid redirect to table" \ 442 "uid no redirect to table" 443 fi 444 445 fib_check_iproute_support "sport" "sport" 446 if [ $? -eq 0 ]; then 447 match="sport 666 dport 777" 448 getnomatch="sport 667 dport 778" 449 fib_rule4_test_match_n_redirect "$match" "$match" \ 450 "$getnomatch" "sport and dport redirect to table" \ 451 "sport and dport no redirect to table" 452 fi 453 454 fib_check_iproute_support "ipproto" "ipproto" 455 if [ $? -eq 0 ]; then 456 match="ipproto tcp" 457 getnomatch="ipproto udp" 458 fib_rule4_test_match_n_redirect "$match" "$match" \ 459 "$getnomatch" "ipproto tcp match" \ 460 "ipproto udp no match" 461 fi 462 463 fib_check_iproute_support "ipproto" "ipproto" 464 if [ $? -eq 0 ]; then 465 match="ipproto icmp" 466 getnomatch="ipproto tcp" 467 fib_rule4_test_match_n_redirect "$match" "$match" \ 468 "$getnomatch" "ipproto icmp match" \ 469 "ipproto tcp no match" 470 fi 471} 472 473fib_rule4_vrf_test() 474{ 475 setup_vrf 476 fib_rule4_test "- with VRF" 477 cleanup_vrf 478} 479 480# Verify that the IP_TOS option of UDPv4 and TCPv4 sockets is properly taken 481# into account when connecting the socket and when sending packets. 482fib_rule4_connect_test() 483{ 484 local dsfield 485 486 echo 487 echo "IPv4 FIB rule connect tests" 488 489 setup_peer 490 $IP -4 rule add dsfield 0x04 table $RTABLE_PEER 491 492 # Combine the base DS Field value (0x04) with all possible ECN values 493 # (Not-ECT: 0, ECT(1): 1, ECT(0): 2, CE: 3). 494 # The ECN bits shouldn't influence the result of the test. 495 for dsfield in 0x04 0x05 0x06 0x07; do 496 nettest -q -B -t 5 -N $testns -O $peerns -D -U -Q "${dsfield}" \ 497 -l 198.51.100.11 -r 198.51.100.11 498 log_test $? 0 "rule4 dsfield udp connect (dsfield ${dsfield})" 499 500 nettest -q -B -t 5 -N $testns -O $peerns -Q "${dsfield}" \ 501 -l 198.51.100.11 -r 198.51.100.11 502 log_test $? 0 "rule4 dsfield tcp connect (dsfield ${dsfield})" 503 done 504 505 # Check that UDP and TCP connections fail when using a DS Field that 506 # does not match the previously configured FIB rule. 507 nettest -q -B -t 5 -N $testns -O $peerns -D -U -Q 0x20 \ 508 -l 198.51.100.11 -r 198.51.100.11 509 log_test $? 1 "rule4 dsfield udp no connect (dsfield 0x20)" 510 511 nettest -q -B -t 5 -N $testns -O $peerns -Q 0x20 \ 512 -l 198.51.100.11 -r 198.51.100.11 513 log_test $? 1 "rule4 dsfield tcp no connect (dsfield 0x20)" 514 515 $IP -4 rule del dsfield 0x04 table $RTABLE_PEER 516 cleanup_peer 517} 518################################################################################ 519# usage 520 521usage() 522{ 523 cat <<EOF 524usage: ${0##*/} OPTS 525 526 -t <test> Test(s) to run (default: all) 527 (options: $TESTS) 528EOF 529} 530 531################################################################################ 532# main 533 534while getopts ":t:h" opt; do 535 case $opt in 536 t) TESTS=$OPTARG;; 537 h) usage; exit 0;; 538 *) usage; exit 1;; 539 esac 540done 541 542if [ "$(id -u)" -ne 0 ];then 543 echo "SKIP: Need root privileges" 544 exit $ksft_skip 545fi 546 547if [ ! -x "$(command -v ip)" ]; then 548 echo "SKIP: Could not run test without ip tool" 549 exit $ksft_skip 550fi 551 552check_gen_prog "nettest" 553 554# start clean 555cleanup &> /dev/null 556setup 557for t in $TESTS 558do 559 case $t in 560 fib_rule6_test|fib_rule6) fib_rule6_test;; 561 fib_rule4_test|fib_rule4) fib_rule4_test;; 562 fib_rule6_connect_test|fib_rule6_connect) fib_rule6_connect_test;; 563 fib_rule4_connect_test|fib_rule4_connect) fib_rule4_connect_test;; 564 fib_rule6_vrf_test|fib_rule6_vrf) fib_rule6_vrf_test;; 565 fib_rule4_vrf_test|fib_rule4_vrf) fib_rule4_vrf_test;; 566 567 help) echo "Test names: $TESTS"; exit 0;; 568 569 esac 570done 571cleanup 572 573if [ "$TESTS" != "none" ]; then 574 printf "\nTests passed: %3d\n" ${nsuccess} 575 printf "Tests failed: %3d\n" ${nfail} 576fi 577 578exit $ret 579