selftests: forwarding: Add libs for gretap mirror testing
To simplify implementation of mirror-to-gretap tests, extend lib.sh with several new functions that might potentially be useful more broadly (although right now the mirroring tests will be the only client). Also add mirror_lib.sh with code useful for mirroring tests, mirror_gre_lib.sh with code specifically useful for mirror-to-gretap tests, and mirror_gre_topo.sh that primes a given test with a good baseline topology that the test can then tweak to its liking. Signed-off-by: Petr Machata <petrm@mellanox.com> Reviewed-by: Jiri Pirko <jiri@mellanox.com> Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Petr Machata
David S. Miller
parent
6a26ef9bf4
commit
7d4cbae04f
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@ -321,6 +321,25 @@ simple_if_fini()
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vrf_destroy $vrf_name
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}
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tunnel_create()
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{
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local name=$1; shift
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local type=$1; shift
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local local=$1; shift
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local remote=$1; shift
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ip link add name $name type $type \
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local $local remote $remote "$@"
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ip link set dev $name up
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}
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tunnel_destroy()
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{
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local name=$1; shift
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ip link del dev $name
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}
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master_name_get()
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{
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local if_name=$1
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@ -335,6 +354,15 @@ link_stats_tx_packets_get()
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ip -j -s link show dev $if_name | jq '.[]["stats64"]["tx"]["packets"]'
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}
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tc_rule_stats_get()
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{
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local dev=$1; shift
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local pref=$1; shift
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tc -j -s filter show dev $dev ingress pref $pref |
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jq '.[1].options.actions[].stats.packets'
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}
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mac_get()
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{
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local if_name=$1
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@ -381,6 +409,74 @@ tc_offload_check()
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return 0
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}
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slow_path_trap_install()
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{
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local dev=$1; shift
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local direction=$1; shift
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if [ "${tcflags/skip_hw}" != "$tcflags" ]; then
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# For slow-path testing, we need to install a trap to get to
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# slow path the packets that would otherwise be switched in HW.
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tc filter add dev $dev $direction pref 1 \
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flower skip_sw action trap
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fi
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}
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slow_path_trap_uninstall()
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{
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local dev=$1; shift
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local direction=$1; shift
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if [ "${tcflags/skip_hw}" != "$tcflags" ]; then
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tc filter del dev $dev $direction pref 1 flower skip_sw
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fi
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}
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__icmp_capture_add_del()
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{
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local add_del=$1; shift
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local pref=$1; shift
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local vsuf=$1; shift
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local tundev=$1; shift
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local filter=$1; shift
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tc filter $add_del dev "$tundev" ingress \
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proto ip$vsuf pref $pref \
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flower ip_proto icmp$vsuf $filter \
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action pass
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}
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icmp_capture_install()
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{
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__icmp_capture_add_del add 100 "" "$@"
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}
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icmp_capture_uninstall()
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{
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__icmp_capture_add_del del 100 "" "$@"
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}
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icmp6_capture_install()
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{
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__icmp_capture_add_del add 100 v6 "$@"
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}
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icmp6_capture_uninstall()
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{
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__icmp_capture_add_del del 100 v6 "$@"
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}
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matchall_sink_create()
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{
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local dev=$1; shift
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tc qdisc add dev $dev clsact
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tc filter add dev $dev ingress \
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pref 10000 \
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matchall \
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action drop
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}
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##############################################################################
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# Tests
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@ -0,0 +1,85 @@
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# SPDX-License-Identifier: GPL-2.0
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do_test_span_gre_dir_ips()
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{
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local expect=$1; shift
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local tundev=$1; shift
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local direction=$1; shift
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local ip1=$1; shift
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local ip2=$1; shift
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icmp_capture_install h3-$tundev
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mirror_test v$h1 $ip1 $ip2 h3-$tundev 100 $expect
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mirror_test v$h2 $ip2 $ip1 h3-$tundev 100 $expect
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icmp_capture_uninstall h3-$tundev
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}
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quick_test_span_gre_dir_ips()
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{
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do_test_span_gre_dir_ips 10 "$@"
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}
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fail_test_span_gre_dir_ips()
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{
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do_test_span_gre_dir_ips 0 "$@"
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}
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test_span_gre_dir_ips()
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{
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local tundev=$1; shift
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local direction=$1; shift
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local forward_type=$1; shift
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local backward_type=$1; shift
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local ip1=$1; shift
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local ip2=$1; shift
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quick_test_span_gre_dir_ips "$tundev" "$direction" "$ip1" "$ip2"
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icmp_capture_install h3-$tundev "type $forward_type"
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mirror_test v$h1 $ip1 $ip2 h3-$tundev 100 10
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icmp_capture_uninstall h3-$tundev
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icmp_capture_install h3-$tundev "type $backward_type"
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mirror_test v$h2 $ip2 $ip1 h3-$tundev 100 10
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icmp_capture_uninstall h3-$tundev
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}
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full_test_span_gre_dir_ips()
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{
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local tundev=$1; shift
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local direction=$1; shift
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local forward_type=$1; shift
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local backward_type=$1; shift
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local what=$1; shift
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local ip1=$1; shift
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local ip2=$1; shift
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RET=0
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mirror_install $swp1 $direction $tundev "matchall $tcflags"
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test_span_gre_dir_ips "$tundev" "$direction" "$forward_type" \
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"$backward_type" "$ip1" "$ip2"
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mirror_uninstall $swp1 $direction
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log_test "$direction $what ($tcflags)"
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}
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quick_test_span_gre_dir()
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{
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quick_test_span_gre_dir_ips "$@" 192.0.2.1 192.0.2.2
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}
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fail_test_span_gre_dir()
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{
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fail_test_span_gre_dir_ips "$@" 192.0.2.1 192.0.2.2
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}
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test_span_gre_dir()
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{
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test_span_gre_dir_ips "$@" 192.0.2.1 192.0.2.2
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}
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full_test_span_gre_dir()
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{
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full_test_span_gre_dir_ips "$@" 192.0.2.1 192.0.2.2
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}
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@ -0,0 +1,129 @@
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# SPDX-License-Identifier: GPL-2.0
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# This is the standard topology for testing mirroring to gretap and ip6gretap
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# netdevices. The tests that use it tweak it in one way or another--importantly,
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# $swp3 and $h3 need to have addresses set up.
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#
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# +---------------------+ +---------------------+
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# | H1 | | H2 |
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# | + $h1 | | $h2 + |
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# | | 192.0.2.1/28 | | 192.0.2.2/28 | |
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# +-----|---------------+ +---------------|-----+
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# | |
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# +-----|-------------------------------------------------------------|-----+
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# | SW o--> mirror | |
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# | +---|-------------------------------------------------------------|---+ |
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# | | + $swp1 BR $swp2 + | |
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# | +---------------------------------------------------------------------+ |
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# | |
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# | + $swp3 + gt6 (ip6gretap) + gt4 (gretap) |
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# | | : loc=2001:db8:2::1 : loc=192.0.2.129 |
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# | | : rem=2001:db8:2::2 : rem=192.0.2.130 |
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# | | : ttl=100 : ttl=100 |
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# | | : tos=inherit : tos=inherit |
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# | | : : |
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# +-----|---------------------:----------------------:----------------------+
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# | : :
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# +-----|---------------------:----------------------:----------------------+
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# | H3 + $h3 + h3-gt6 (ip6gretap) + h3-gt4 (gretap) |
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# | loc=2001:db8:2::2 loc=192.0.2.130 |
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# | rem=2001:db8:2::1 rem=192.0.2.129 |
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# | ttl=100 ttl=100 |
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# | tos=inherit tos=inherit |
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# | |
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# +-------------------------------------------------------------------------+
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mirror_gre_topo_h1_create()
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{
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simple_if_init $h1 192.0.2.1/28
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}
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mirror_gre_topo_h1_destroy()
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{
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simple_if_fini $h1 192.0.2.1/28
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}
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mirror_gre_topo_h2_create()
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{
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simple_if_init $h2 192.0.2.2/28
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}
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mirror_gre_topo_h2_destroy()
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{
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simple_if_fini $h2 192.0.2.2/28
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}
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mirror_gre_topo_h3_create()
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{
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simple_if_init $h3
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tunnel_create h3-gt4 gretap 192.0.2.130 192.0.2.129
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ip link set h3-gt4 vrf v$h3
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matchall_sink_create h3-gt4
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tunnel_create h3-gt6 ip6gretap 2001:db8:2::2 2001:db8:2::1
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ip link set h3-gt6 vrf v$h3
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matchall_sink_create h3-gt6
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}
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mirror_gre_topo_h3_destroy()
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{
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tunnel_destroy h3-gt6
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tunnel_destroy h3-gt4
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simple_if_fini $h3
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}
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mirror_gre_topo_switch_create()
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{
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ip link set dev $swp3 up
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ip link add name br1 type bridge vlan_filtering 1
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ip link set dev br1 up
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ip link set dev $swp1 master br1
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ip link set dev $swp1 up
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ip link set dev $swp2 master br1
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ip link set dev $swp2 up
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tunnel_create gt4 gretap 192.0.2.129 192.0.2.130 \
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ttl 100 tos inherit
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tunnel_create gt6 ip6gretap 2001:db8:2::1 2001:db8:2::2 \
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ttl 100 tos inherit allow-localremote
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tc qdisc add dev $swp1 clsact
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}
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mirror_gre_topo_switch_destroy()
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{
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tc qdisc del dev $swp1 clsact
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tunnel_destroy gt6
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tunnel_destroy gt4
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ip link set dev $swp1 down
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ip link set dev $swp2 down
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ip link del dev br1
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ip link set dev $swp3 down
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}
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mirror_gre_topo_create()
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{
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mirror_gre_topo_h1_create
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mirror_gre_topo_h2_create
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mirror_gre_topo_h3_create
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mirror_gre_topo_switch_create
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}
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mirror_gre_topo_destroy()
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{
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mirror_gre_topo_switch_destroy
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mirror_gre_topo_h3_destroy
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mirror_gre_topo_h2_destroy
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mirror_gre_topo_h1_destroy
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}
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@ -0,0 +1,40 @@
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# SPDX-License-Identifier: GPL-2.0
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mirror_install()
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{
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local from_dev=$1; shift
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local direction=$1; shift
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local to_dev=$1; shift
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local filter=$1; shift
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tc filter add dev $from_dev $direction \
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pref 1000 $filter \
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action mirred egress mirror dev $to_dev
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}
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mirror_uninstall()
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{
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local from_dev=$1; shift
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local direction=$1; shift
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tc filter del dev $swp1 $direction pref 1000
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}
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mirror_test()
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{
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local vrf_name=$1; shift
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local sip=$1; shift
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local dip=$1; shift
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local dev=$1; shift
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local pref=$1; shift
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local expect=$1; shift
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local t0=$(tc_rule_stats_get $dev $pref)
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ip vrf exec $vrf_name \
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${PING} ${sip:+-I $sip} $dip -c 10 -i 0.1 -w 2 &> /dev/null
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local t1=$(tc_rule_stats_get $dev $pref)
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local delta=$((t1 - t0))
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# Tolerate a couple stray extra packets.
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((expect <= delta && delta <= expect + 2))
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check_err $? "Expected to capture $expect packets, got $delta."
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}
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