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