| #!/bin/bash |
| # SPDX-License-Identifier: GPL-2.0 |
| |
| # Kselftest framework requirement - SKIP code is 4. |
| ksft_skip=4 |
| |
| ALL_TESTS="loopback_test" |
| NUM_NETIFS=2 |
| lib_dir=$(dirname "$0") |
| source "$lib_dir"/../../../net/forwarding/tc_common.sh |
| source "$lib_dir"/../../../net/forwarding/lib.sh |
| |
| h1_create() |
| { |
| simple_if_init $h1 192.0.2.1/24 |
| tc qdisc add dev $h1 clsact |
| } |
| |
| h1_destroy() |
| { |
| tc qdisc del dev $h1 clsact |
| simple_if_fini $h1 192.0.2.1/24 |
| } |
| |
| h2_create() |
| { |
| simple_if_init $h2 |
| } |
| |
| h2_destroy() |
| { |
| simple_if_fini $h2 |
| } |
| |
| loopback_test() |
| { |
| RET=0 |
| |
| tc filter add dev $h1 ingress protocol arp pref 1 handle 101 flower \ |
| skip_hw arp_op reply arp_tip 192.0.2.1 action drop |
| |
| $MZ $h1 -c 1 -t arp -q |
| |
| tc_check_packets "dev $h1 ingress" 101 1 |
| check_fail $? "Matched on a filter without loopback setup" |
| |
| ethtool -K $h1 loopback on |
| check_err $? "Failed to enable loopback" |
| |
| setup_wait_dev $h1 |
| |
| $MZ $h1 -c 1 -t arp -q |
| |
| tc_check_packets "dev $h1 ingress" 101 1 |
| check_err $? "Did not match on filter with loopback" |
| |
| ethtool -K $h1 loopback off |
| check_err $? "Failed to disable loopback" |
| |
| $MZ $h1 -c 1 -t arp -q |
| |
| tc_check_packets "dev $h1 ingress" 101 2 |
| check_fail $? "Matched on a filter after loopback was removed" |
| |
| tc filter del dev $h1 ingress protocol arp pref 1 handle 101 flower |
| |
| log_test "loopback" |
| } |
| |
| setup_prepare() |
| { |
| h1=${NETIFS[p1]} |
| h2=${NETIFS[p2]} |
| |
| vrf_prepare |
| |
| h1_create |
| h2_create |
| |
| if ethtool -k $h1 | grep loopback | grep -q fixed; then |
| log_test "SKIP: dev $h1 does not support loopback feature" |
| exit $ksft_skip |
| fi |
| } |
| |
| cleanup() |
| { |
| pre_cleanup |
| |
| h2_destroy |
| h1_destroy |
| |
| vrf_cleanup |
| } |
| |
| trap cleanup EXIT |
| |
| setup_prepare |
| setup_wait |
| |
| tests_run |
| |
| exit $EXIT_STATUS |
