#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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# This test uses standard topology for testing gretap. See
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# mirror_gre_topo_lib.sh for more details.
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#
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# Test how mirrors to gretap and ip6gretap react to changes to relevant
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# configuration.
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ALL_TESTS="
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test_ttl
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test_tun_up
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test_egress_up
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test_remote_ip
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test_tun_del
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test_route_del
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"
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NUM_NETIFS=6
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source lib.sh
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source mirror_lib.sh
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source mirror_gre_lib.sh
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source mirror_gre_topo_lib.sh
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setup_prepare()
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{
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h1=${NETIFS[p1]}
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swp1=${NETIFS[p2]}
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swp2=${NETIFS[p3]}
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h2=${NETIFS[p4]}
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swp3=${NETIFS[p5]}
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h3=${NETIFS[p6]}
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vrf_prepare
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mirror_gre_topo_create
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# This test downs $swp3, which deletes the configured IPv6 address
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# unless this sysctl is set.
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sysctl_set net.ipv6.conf.$swp3.keep_addr_on_down 1
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ip address add dev $swp3 192.0.2.129/28
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ip address add dev $h3 192.0.2.130/28
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ip address add dev $swp3 2001:db8:2::1/64
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ip address add dev $h3 2001:db8:2::2/64
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}
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cleanup()
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{
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pre_cleanup
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ip address del dev $h3 2001:db8:2::2/64
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ip address del dev $swp3 2001:db8:2::1/64
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ip address del dev $h3 192.0.2.130/28
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ip address del dev $swp3 192.0.2.129/28
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sysctl_restore net.ipv6.conf.$swp3.keep_addr_on_down
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mirror_gre_topo_destroy
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vrf_cleanup
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}
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test_span_gre_ttl()
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{
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local tundev=$1; shift
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local type=$1; shift
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local prot=$1; shift
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local what=$1; shift
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RET=0
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mirror_install $swp1 ingress $tundev \
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"prot ip flower $tcflags ip_prot icmp"
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tc filter add dev $h3 ingress pref 77 prot $prot \
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flower ip_ttl 50 action pass
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mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 0
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ip link set dev $tundev type $type ttl 50
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sleep 2
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mirror_test v$h1 192.0.2.1 192.0.2.2 $h3 77 10
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ip link set dev $tundev type $type ttl 100
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tc filter del dev $h3 ingress pref 77
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mirror_uninstall $swp1 ingress
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log_test "$what: TTL change ($tcflags)"
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}
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test_span_gre_tun_up()
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{
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local tundev=$1; shift
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local what=$1; shift
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RET=0
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ip link set dev $tundev down
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mirror_install $swp1 ingress $tundev "matchall $tcflags"
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fail_test_span_gre_dir $tundev ingress
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ip link set dev $tundev up
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quick_test_span_gre_dir $tundev ingress
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mirror_uninstall $swp1 ingress
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log_test "$what: tunnel down/up ($tcflags)"
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}
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test_span_gre_egress_up()
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{
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local tundev=$1; shift
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local remote_ip=$1; shift
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local what=$1; shift
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RET=0
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ip link set dev $swp3 down
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mirror_install $swp1 ingress $tundev "matchall $tcflags"
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fail_test_span_gre_dir $tundev ingress
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# After setting the device up, wait for neighbor to get resolved so that
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# we can expect mirroring to work.
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ip link set dev $swp3 up
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setup_wait_dev $swp3
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ping -c 1 -I $swp3 $remote_ip &>/dev/null
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quick_test_span_gre_dir $tundev ingress
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mirror_uninstall $swp1 ingress
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log_test "$what: egress down/up ($tcflags)"
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}
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test_span_gre_remote_ip()
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{
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local tundev=$1; shift
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local type=$1; shift
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local correct_ip=$1; shift
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local wrong_ip=$1; shift
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local what=$1; shift
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RET=0
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ip link set dev $tundev type $type remote $wrong_ip
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mirror_install $swp1 ingress $tundev "matchall $tcflags"
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fail_test_span_gre_dir $tundev ingress
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ip link set dev $tundev type $type remote $correct_ip
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quick_test_span_gre_dir $tundev ingress
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mirror_uninstall $swp1 ingress
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log_test "$what: remote address change ($tcflags)"
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}
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test_span_gre_tun_del()
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{
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local tundev=$1; shift
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local type=$1; shift
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local flags=$1; shift
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local local_ip=$1; shift
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local remote_ip=$1; shift
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local what=$1; shift
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RET=0
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mirror_install $swp1 ingress $tundev "matchall $tcflags"
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quick_test_span_gre_dir $tundev ingress
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ip link del dev $tundev
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fail_test_span_gre_dir $tundev ingress
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tunnel_create $tundev $type $local_ip $remote_ip \
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ttl 100 tos inherit $flags
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# Recreating the tunnel doesn't reestablish mirroring, so reinstall it
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# and verify it works for the follow-up tests.
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mirror_uninstall $swp1 ingress
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mirror_install $swp1 ingress $tundev "matchall $tcflags"
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quick_test_span_gre_dir $tundev ingress
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mirror_uninstall $swp1 ingress
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log_test "$what: tunnel deleted ($tcflags)"
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}
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test_span_gre_route_del()
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{
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local tundev=$1; shift
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local edev=$1; shift
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local route=$1; shift
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local what=$1; shift
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RET=0
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mirror_install $swp1 ingress $tundev "matchall $tcflags"
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quick_test_span_gre_dir $tundev ingress
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ip route del $route dev $edev
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fail_test_span_gre_dir $tundev ingress
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ip route add $route dev $edev
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quick_test_span_gre_dir $tundev ingress
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mirror_uninstall $swp1 ingress
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log_test "$what: underlay route removal ($tcflags)"
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}
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test_ttl()
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{
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test_span_gre_ttl gt4 gretap ip "mirror to gretap"
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test_span_gre_ttl gt6 ip6gretap ipv6 "mirror to ip6gretap"
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}
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test_tun_up()
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{
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test_span_gre_tun_up gt4 "mirror to gretap"
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test_span_gre_tun_up gt6 "mirror to ip6gretap"
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}
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test_egress_up()
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{
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test_span_gre_egress_up gt4 192.0.2.130 "mirror to gretap"
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test_span_gre_egress_up gt6 2001:db8:2::2 "mirror to ip6gretap"
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}
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test_remote_ip()
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{
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test_span_gre_remote_ip gt4 gretap 192.0.2.130 192.0.2.132 "mirror to gretap"
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test_span_gre_remote_ip gt6 ip6gretap 2001:db8:2::2 2001:db8:2::4 "mirror to ip6gretap"
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}
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test_tun_del()
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{
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test_span_gre_tun_del gt4 gretap "" \
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192.0.2.129 192.0.2.130 "mirror to gretap"
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test_span_gre_tun_del gt6 ip6gretap allow-localremote \
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2001:db8:2::1 2001:db8:2::2 "mirror to ip6gretap"
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}
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test_route_del()
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{
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test_span_gre_route_del gt4 $swp3 192.0.2.128/28 "mirror to gretap"
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test_span_gre_route_del gt6 $swp3 2001:db8:2::/64 "mirror to ip6gretap"
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}
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test_all()
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{
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slow_path_trap_install $swp1 ingress
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slow_path_trap_install $swp1 egress
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tests_run
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slow_path_trap_uninstall $swp1 egress
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slow_path_trap_uninstall $swp1 ingress
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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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tcflags="skip_hw"
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test_all
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if ! tc_offload_check; then
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echo "WARN: Could not test offloaded functionality"
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else
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tcflags="skip_sw"
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test_all
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fi
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exit $EXIT_STATUS
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