cachepc-linux

Fork of AMDESE/linux with modifications for CachePC side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-linux
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loopback.sh (1589B)

      1#!/bin/bash
      2# SPDX-License-Identifier: GPL-2.0
      3
      4# Kselftest framework requirement - SKIP code is 4.
      5ksft_skip=4
      6
      7ALL_TESTS="loopback_test"
      8NUM_NETIFS=2
      9source tc_common.sh
     10source lib.sh
     11
     12h1_create()
     13{
     14	simple_if_init $h1 192.0.2.1/24
     15	tc qdisc add dev $h1 clsact
     16}
     17
     18h1_destroy()
     19{
     20	tc qdisc del dev $h1 clsact
     21	simple_if_fini $h1 192.0.2.1/24
     22}
     23
     24h2_create()
     25{
     26	simple_if_init $h2
     27}
     28
     29h2_destroy()
     30{
     31	simple_if_fini $h2
     32}
     33
     34loopback_test()
     35{
     36	RET=0
     37
     38	tc filter add dev $h1 ingress protocol arp pref 1 handle 101 flower \
     39		skip_hw arp_op reply arp_tip 192.0.2.1 action drop
     40
     41	$MZ $h1 -c 1 -t arp -q
     42
     43	tc_check_packets "dev $h1 ingress" 101 1
     44	check_fail $? "Matched on a filter without loopback setup"
     45
     46	ethtool -K $h1 loopback on
     47	check_err $? "Failed to enable loopback"
     48
     49	setup_wait_dev $h1
     50
     51	$MZ $h1 -c 1 -t arp -q
     52
     53	tc_check_packets "dev $h1 ingress" 101 1
     54	check_err $? "Did not match on filter with loopback"
     55
     56	ethtool -K $h1 loopback off
     57	check_err $? "Failed to disable loopback"
     58
     59	$MZ $h1 -c 1 -t arp -q
     60
     61	tc_check_packets "dev $h1 ingress" 101 2
     62	check_fail $? "Matched on a filter after loopback was removed"
     63
     64	tc filter del dev $h1 ingress protocol arp pref 1 handle 101 flower
     65
     66	log_test "loopback"
     67}
     68
     69setup_prepare()
     70{
     71	h1=${NETIFS[p1]}
     72	h2=${NETIFS[p2]}
     73
     74	vrf_prepare
     75
     76	h1_create
     77	h2_create
     78
     79	if ethtool -k $h1 | grep loopback | grep -q fixed; then
     80		log_test "SKIP: dev $h1 does not support loopback feature"
     81		exit $ksft_skip
     82	fi
     83}
     84
     85cleanup()
     86{
     87	pre_cleanup
     88
     89	h2_destroy
     90	h1_destroy
     91
     92	vrf_cleanup
     93}
     94
     95trap cleanup EXIT
     96
     97setup_prepare
     98setup_wait
     99
    100tests_run
    101
    102exit $EXIT_STATUS