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Merge branch 'selftests-forwarding-vxlan_bridge_1q_mc_ul-fix-flakiness'

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Petr Machata says:

====================
selftests: forwarding: vxlan_bridge_1q_mc_ul: Fix flakiness

The net/forwarding/vxlan_bridge_1q_mc_ul selftest runs an overlay traffic,
forwarded over a multicast-routed VXLAN underlay. In order to determine
whether packets reach their intended destination, it uses a TC match. For
convenience, it uses a flower match, which however does not allow matching
on the encapsulated packet. So various service traffic ends up being
indistinguishable from the test packets, and ends up confusing the test. To
alleviate the problem, the test uses sleep to allow the necessary service
traffic to run and clear the channel, before running the test traffic. This
worked for a while, but lately we have nevertheless seen flakiness of the
test in the CI.

In this patchset, first generalize tc_rule_stats_get() to support u32 in
patch #1, then in patch #2 convert the test to use u32 to allow parsing
deeper into the packet, and in #3 drop the now-unnecessary sleep.
====================

Link: https://patch.msgid.link/cover.1765289566.git.petrm@nvidia.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jakub Kicinski
2025-12-11 00:53:18 -08:00
parent 6bcb7727d9 514520b34b
commit 237c1e152b
3 changed files with 34 additions and 46 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
tools/testing/selftests/net/forwarding/config
View File

@@ -29,6 +29,7 @@ CONFIG_NET_ACT_VLAN=m
CONFIG_NET_CLS_BASIC=m
CONFIG_NET_CLS_FLOWER=m
CONFIG_NET_CLS_MATCHALL=m
CONFIG_NET_CLS_U32=m
CONFIG_NET_EMATCH=y
CONFIG_NET_EMATCH_META=m
CONFIG_NETFILTER=y

76
tools/testing/selftests/net/forwarding/vxlan_bridge_1q_mc_ul.sh
View File

@@ -138,13 +138,18 @@ install_capture()
defer tc qdisc del dev "$dev" clsact
tc filter add dev "$dev" ingress proto ip pref 104 \
flower skip_hw ip_proto udp dst_port "$VXPORT" \
action pass
u32 match ip protocol 0x11 0xff \
match u16 "$VXPORT" 0xffff at 0x16 \
match u16 0x0800 0xffff at 0x30 \
action pass
defer tc filter del dev "$dev" ingress proto ip pref 104
tc filter add dev "$dev" ingress proto ipv6 pref 106 \
flower skip_hw ip_proto udp dst_port "$VXPORT" \
action pass
u32 match ip6 protocol 0x11 0xff \
match u16 "$VXPORT" 0xffff at 0x2a \
match u16 0x86dd 0xffff at 0x44 \
match u8 0x11 0xff at 0x4c \
action pass
defer tc filter del dev "$dev" ingress proto ipv6 pref 106
}
@@ -248,13 +253,6 @@ vx_create()
}
export -f vx_create
vx_wait()
{
# Wait for all the ARP, IGMP etc. noise to settle down so that the
# tunnel is clear for measurements.
sleep 10
}
vx10_create()
{
vx_create vx10 10 id 1000 "$@"
@@ -267,18 +265,6 @@ vx20_create()
}
export -f vx20_create
vx10_create_wait()
{
vx10_create "$@"
vx_wait
}
vx20_create_wait()
{
vx20_create "$@"
vx_wait
}
ns_init_common()
{
local ns=$1; shift
@@ -554,7 +540,7 @@ ipv4_nomcroute()
# Install a misleading (S,G) rule to attempt to trick the system into
# pushing the packets elsewhere.
adf_install_broken_sg
vx10_create_wait local 192.0.2.100 group "$GROUP4" dev "$swp2"
vx10_create local 192.0.2.100 group "$GROUP4" dev "$swp2"
do_test 4 10 0 "IPv4 nomcroute"
}
@@ -562,7 +548,7 @@ ipv6_nomcroute()
{
# Like for IPv4, install a misleading (S,G).
adf_install_broken_sg
vx20_create_wait local 2001:db8:4::1 group "$GROUP6" dev "$swp2"
vx20_create local 2001:db8:4::1 group "$GROUP6" dev "$swp2"
do_test 6 10 0 "IPv6 nomcroute"
}
@@ -581,35 +567,35 @@ ipv6_nomcroute_rx()
ipv4_mcroute()
{
adf_install_sg
vx10_create_wait local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
do_test 4 10 10 "IPv4 mcroute"
}
ipv6_mcroute()
{
adf_install_sg
vx20_create_wait local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
vx20_create local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
do_test 6 10 10 "IPv6 mcroute"
}
ipv4_mcroute_rx()
{
adf_install_sg
vx10_create_wait local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
ipv4_do_test_rx 0 "IPv4 mcroute ping"
}
ipv6_mcroute_rx()
{
adf_install_sg
vx20_create_wait local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
vx20_create local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
ipv6_do_test_rx 0 "IPv6 mcroute ping"
}
ipv4_mcroute_changelink()
{
adf_install_sg
vx10_create_wait local 192.0.2.100 group "$GROUP4" dev "$IPMR"
vx10_create local 192.0.2.100 group "$GROUP4" dev "$IPMR"
ip link set dev vx10 type vxlan mcroute
sleep 1
do_test 4 10 10 "IPv4 mcroute changelink"
@@ -618,7 +604,7 @@ ipv4_mcroute_changelink()
ipv6_mcroute_changelink()
{
adf_install_sg
vx20_create_wait local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
vx20_create local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
ip link set dev vx20 type vxlan mcroute
sleep 1
do_test 6 10 10 "IPv6 mcroute changelink"
@@ -627,47 +613,47 @@ ipv6_mcroute_changelink()
ipv4_mcroute_starg()
{
adf_install_starg
vx10_create_wait local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
do_test 4 10 10 "IPv4 mcroute (*,G)"
}
ipv6_mcroute_starg()
{
adf_install_starg
vx20_create_wait local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
vx20_create local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
do_test 6 10 10 "IPv6 mcroute (*,G)"
}
ipv4_mcroute_starg_rx()
{
adf_install_starg
vx10_create_wait local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
ipv4_do_test_rx 0 "IPv4 mcroute (*,G) ping"
}
ipv6_mcroute_starg_rx()
{
adf_install_starg
vx20_create_wait local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
vx20_create local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
ipv6_do_test_rx 0 "IPv6 mcroute (*,G) ping"
}
ipv4_mcroute_noroute()
{
vx10_create_wait local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
do_test 4 0 0 "IPv4 mcroute, no route"
}
ipv6_mcroute_noroute()
{
vx20_create_wait local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
vx20_create local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
do_test 6 0 0 "IPv6 mcroute, no route"
}
ipv4_mcroute_fdb()
{
adf_install_sg
vx10_create_wait local 192.0.2.100 dev "$IPMR" mcroute
vx10_create local 192.0.2.100 dev "$IPMR" mcroute
bridge fdb add dev vx10 \
00:00:00:00:00:00 self static dst "$GROUP4" via "$IPMR"
do_test 4 10 10 "IPv4 mcroute FDB"
@@ -676,7 +662,7 @@ ipv4_mcroute_fdb()
ipv6_mcroute_fdb()
{
adf_install_sg
vx20_create_wait local 2001:db8:4::1 dev "$IPMR" mcroute
vx20_create local 2001:db8:4::1 dev "$IPMR" mcroute
bridge -6 fdb add dev vx20 \
00:00:00:00:00:00 self static dst "$GROUP6" via "$IPMR"
do_test 6 10 10 "IPv6 mcroute FDB"
@@ -686,7 +672,7 @@ ipv6_mcroute_fdb()
ipv4_mcroute_fdb_oif0()
{
adf_install_sg
vx10_create_wait local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.100 group "$GROUP4" dev "$IPMR" mcroute
bridge fdb del dev vx10 00:00:00:00:00:00
bridge fdb add dev vx10 00:00:00:00:00:00 self static dst "$GROUP4"
do_test 4 10 10 "IPv4 mcroute oif=0"
@@ -703,7 +689,7 @@ ipv6_mcroute_fdb_oif0()
defer ip -6 route del table local multicast "$GROUP6/128" dev "$IPMR"
adf_install_sg
vx20_create_wait local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
vx20_create local 2001:db8:4::1 group "$GROUP6" dev "$IPMR" mcroute
bridge -6 fdb del dev vx20 00:00:00:00:00:00
bridge -6 fdb add dev vx20 00:00:00:00:00:00 self static dst "$GROUP6"
do_test 6 10 10 "IPv6 mcroute oif=0"
@@ -716,7 +702,7 @@ ipv4_mcroute_fdb_oif0_sep()
adf_install_sg_sep
adf_ip_addr_add lo 192.0.2.120/28
vx10_create_wait local 192.0.2.120 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.120 group "$GROUP4" dev "$IPMR" mcroute
bridge fdb del dev vx10 00:00:00:00:00:00
bridge fdb add dev vx10 00:00:00:00:00:00 self static dst "$GROUP4"
do_test 4 10 10 "IPv4 mcroute TX!=RX oif=0"
@@ -727,7 +713,7 @@ ipv4_mcroute_fdb_oif0_sep_rx()
adf_install_sg_sep_rx lo
adf_ip_addr_add lo 192.0.2.120/28
vx10_create_wait local 192.0.2.120 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.120 group "$GROUP4" dev "$IPMR" mcroute
bridge fdb del dev vx10 00:00:00:00:00:00
bridge fdb add dev vx10 00:00:00:00:00:00 self static dst "$GROUP4"
ipv4_do_test_rx 0 "IPv4 mcroute TX!=RX oif=0 ping"
@@ -738,7 +724,7 @@ ipv4_mcroute_fdb_sep_rx()
adf_install_sg_sep_rx lo
adf_ip_addr_add lo 192.0.2.120/28
vx10_create_wait local 192.0.2.120 group "$GROUP4" dev "$IPMR" mcroute
vx10_create local 192.0.2.120 group "$GROUP4" dev "$IPMR" mcroute
bridge fdb del dev vx10 00:00:00:00:00:00
bridge fdb add \
dev vx10 00:00:00:00:00:00 self static dst "$GROUP4" via lo
@@ -750,7 +736,7 @@ ipv6_mcroute_fdb_sep_rx()
adf_install_sg_sep_rx "X$IPMR"
adf_ip_addr_add "X$IPMR" 2001:db8:5::1/64
vx20_create_wait local 2001:db8:5::1 group "$GROUP6" dev "$IPMR" mcroute
vx20_create local 2001:db8:5::1 group "$GROUP6" dev "$IPMR" mcroute
bridge -6 fdb del dev vx20 00:00:00:00:00:00
bridge -6 fdb add dev vx20 00:00:00:00:00:00 \
self static dst "$GROUP6" via "X$IPMR"

3
tools/testing/selftests/net/lib.sh
View File

@@ -280,7 +280,8 @@ tc_rule_stats_get()
local selector=${1:-.packets}; shift
tc -j -s filter show dev $dev $dir pref $pref \
| jq ".[1].options.actions[].stats$selector"
| jq ".[] | select(.options.actions) |
.options.actions[].stats$selector"
}
tc_rule_handle_stats_get()