diff options
| author | Alice Mikityanska <alice@isovalent.com> | 2026-08-22 15:03:07 +0300 |
|---|---|---|
| committer | Jakub Kicinski <kuba@kernel.org> | 2026-08-27 08:42:28 -0700 |
| commit | f7d0400bd3452ed6915592b1929ba1d39d8e6552 (patch) | |
| tree | a8f4400a5684f4e3473b07d895007cf2974ec909 | |
| parent | bb42c16f489f10144f7d2fbb1f57753f14e12ac8 (diff) | |
selftests: net: Lower threshold with csum offload off in big_tcp_tunnels.sh
With checksum offload disabled, much fewer BIG TCP packets are generated
due to overall loss of throughput. Use a separate threshold in these
tests, which is 1/10 of the threshold set for the rest of tests.
Fixes: 5cb53743e1ff ("selftests: net: Add a test for BIG TCP in UDP tunnels")
Signed-off-by: Alice Mikityanska <alice@isovalent.com>
Acked-by: Matthieu Baerts (NGI0) <matttbe@kernel.org>
Link: https://patch.msgid.link/20260822120308.1165200-4-alice.kernel@fastmail.im
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rwxr-xr-x | tools/testing/selftests/net/big_tcp_tunnels.sh | 7 |
1 files changed, 5 insertions, 2 deletions
diff --git a/tools/testing/selftests/net/big_tcp_tunnels.sh b/tools/testing/selftests/net/big_tcp_tunnels.sh index e0b41f394ebb..003878df7415 100755 --- a/tools/testing/selftests/net/big_tcp_tunnels.sh +++ b/tools/testing/selftests/net/big_tcp_tunnels.sh @@ -107,6 +107,8 @@ cleanup() { } do_test() { + local packets_threshold="$PACKETS_THRESHOLD" + # When tx csum offload is off, software GSO is performed before passing the # packet to veth. Check BIG TCP packets inside the VXLAN tunnel to verify # the software checksum path: if the checksum code is broken, these packets @@ -125,6 +127,7 @@ do_test() { else IPTABLES=ip6tables fi + packets_threshold=$(( PACKETS_THRESHOLD / 10 )) fi if [ "$2" = 4 ]; then IPTABLES_SACK=iptables @@ -157,8 +160,8 @@ do_test() { echo "Captured BIG TCP RX packets: $PACKETS_SERVER" echo "Captured BIG TCP TX packets: $PACKETS_CLIENT" echo "Captured TCP SACK packets: $PACKETS_SACK" - [ "$PACKETS_SERVER" -gt "$PACKETS_THRESHOLD" ] || return 1 - [ "$PACKETS_CLIENT" -gt "$PACKETS_THRESHOLD" ] || return 1 + [ "$PACKETS_SERVER" -gt "$packets_threshold" ] || return 1 + [ "$PACKETS_CLIENT" -gt "$packets_threshold" ] || return 1 [ "$PACKETS_SACK" -lt "$(( PACKETS_CLIENT / 2 ))" ] || return 1 } |